Safaa

I want to be optimistic and say I would take them teaming up together over him deceiving or hurting Matcha in the end. That is what it boils down to.

Either it's deception or something else entirely. We don't know yet, but what I DO know is I don't want to wish harm on a character because I don't like a ship or hyperventilating when they are simply existing together on the same screen. COUGH COUGH MELJAYCE FROM ARCANE COUGH COUGH

If he isn't deceiving her, I would lean on my more optimistic side. One thing I can lean on: a consistent thing to notice about Butter Roll Cookie is that he sees ANY cookie like an experiment. His hyperfocus, attention in investigating, spending resources on a cookie of intrigue IS the affection itself.

I'm able to support this by bringing up how we've heard his affection voice lines, we heard how he finds some cookies intriguing, and we saw a hint how he tried to make a cookie with Espresso Cookie's ingredients– someone that he has a connection to.

A random thought that hit that doesn't really have any prior digging but in a way Matcha Cookie got attention but it's not the favorable kind. Like, she wants to be seen, in particular for her skills (but she also wants general attention). Butter Roll Cookie gives her attention but it's not really all that good.

Matcha does desire recognition, this is correct. In particular she desires to be regarded not only on equal terms as the other COD, but as someone who can outmanoeuvre and overpower them:

Besides her resentment it’s not necessarily that she wants to hurt them, it seems more that she desires to be regarded as someone who could. Someone with more capability than they possess:

However, stating ‘Butter Roll Cookie gives her attention but it's not really all that good’ could imply that there’s ill intent on Butter Roll’s part. But we don’t receive any of Butter Roll’s internal narrative throughout this story, nor any of the main storyline (only the Hotel Costume story are we explicitly given anything from his POV). It’s still reasonable though to assign a value on the type of attention given by what it actually entails, so we can discuss this further.

He is utterly fascinated by her, with the caveat being that it's for her disability only and he goes about it by essentially dehumanizing her.

I would agree he is fascinated by her, and her missing ingredient is a subject of intense interest for him given his research fixation. However, I think stating ‘it’s for her disability only’ is reductive. His interest in her is motivated by his intrigue regarding her ingredient composition, but I’d argue he views all cookies through this lens:

BR’s ascension dialogue. Also, dialogue from his official introduction video on youtube:

(KR, translated to EN (using google): Sometimes I wonder about my own recipe, too. I wish I could experiment with it someday, though…)

(EN dialogue.)

So I would say it’s reasonable to assert that he views all cookies, himself included, through the lens of his hyperfixation (cookie research). Which is not to say this isn’t essentially objectification – reducing cookies to their base ingredients and properties – it is. But there’s this idea floating around that Matcha is a unique recipient of this particular perspective which we can see by his dialogue isn’t true – he at least applies this view to himself.

If we go back to the point made, again, attributing disability to Matcha’s missing ingredient is headcanon. Fan theory. It’s not to say there isn’t an argument that can be made for it, but that’s different from stating it as authorial/canonical fact as seems to be the case here (many such cases). The only thing that her missing ingredient is definitely stated to affect is her personality (which could be a potential indicator of neurodivergence, but that’s somewhat flimsy evidence in of itself). It’s for this reason that I don’t think that he ‘dehumanises’ her via these interactions:

I do think he objectifies other cookies by means of viewing them through the lens of his fixation – their recipes. We are shown that he explicitly applies this view to himself, and we can infer he sees all cookies this way. And yes, he does want samples of her. He also tried to obtain samples of other cookies in the past:

Which sounds dubious at best. But it’s implied that he had at least attempted to acquire samples of other cookies, who probably didn’t have a unique composition as Matcha does. Given that, it’s unsurprising that he wants to procure a sample of Matcha. What I want to point out is that this isn’t a desire that is uniquely attributable to Matcha alone, even with her missing ingredient. He’s tried to do it before, with other cookies!

A majority of the time when he talks to her, he brings up her missing ingredient and acts as if she has a similar thoughts. If I recall (and I double checked for this and it's true) Licorice Cookie tells Butter Roll Cookie that not everyone is obsessed with research as him.

He brought up her missing ingredient four times to my knowledge – once we already mentioned, the instance OP mentioned, when she was destroying the lab, and once more in the finale:

It’s interesting that Licorice makes that comment. An obsession (with cookie research, generally speaking) is an apt description, and again, signals Butter Roll’s lack of social awareness. Which doesn’t excuse his actions, but it puts forth the possibility that he’s not deliberately targeting her. I actually think there’s sufficient evidence that signals he is neurodivergent – I made an analysis post on the hotel costume story here which details that.

But by the end of the laboratorium storyline, he essentially concedes that he underestimated her and agrees to stop provoking her:

But in any case, whilst I agree they were certainly insensitive statements, I don’t see sufficient evidence that he had intent to denigrate her nor holds the view that she is lesser than he is. Because we can see that he does address her as a peer, in their kingdom interaction:

This excellent analysis of the same dialogue (particularly the honorifics used) in the original Korean text really accentuates the intention of the author in their interaction. [It’s worth pointing out that a Korean native speaker backed up this interpretation!]

[quote from the aforementioned post, from Malamilkbeats] When Butter Roll Cookie generally speaks in a Ha-ge-che style, it suggests he isn't trying to be "friends" (which would be Hae-yo-che), but he also isn't being a "bully" (which would be Hae-ra-che). He stays in his role as inquisitive.

And Matcha Cookie very much does not like this nor Butter Roll Cookie. I believe it's implied or outright stated that her missing ingredient plays a factor into why she's treated poorly (could be wrong tho) so I imagine the constant reminder and prodding of her missing ingredient would make her not feel good.

I agree that Matcha seems to hold some negative sentiment towards Butter Roll, I won’t contest that. However, their Kingdom interaction shows her addressing him, trying to mock/tease him. this suggests their relationship is at least somewhat reciprocal, where she will seek him out to antagonise him in response to a perceived slight from Butter Roll in turn.

However, I broadly disagree with the missing ingredient being the reason why the COD treat her badly (she interferes with their plans, and does not fit DE’s standard of utility, so Matcha is ranked at the bottom of the COD hierarchy (IMO this is why Matcha’s specific fantasy is DE saying ‘Who knew Matcha could be more useful than I am?’). But even if this is the case and Matcha’s missing ingredient is the scapegoat, it doesn’t mean that BR is knowingly or purposefully pouring salt on that wound – and how is the COD’s mistreatment of Matcha at large the fault of Butter Roll specifically? Why is their behaviour excusable but his isn’t?

Although to be fair even if her disability isn't why she's treated how she is by the other COD, Butter Roll Cookie's behavior regarding her disability would make pretty much any disabled person uncomfortable.

Once again, this reads to me as an interpretation (Matcha’s missing ingredient = disability) that is stated as fact, that is then applied to a narrative (Butter Roll hyperfixating on Matcha’s unique ingredient composition) which is equated to a real-life societal issue (ableism). It’s not that I don’t think we can apply themes of oppression and discrimination to CRK storylines, but in this instance the crux of this point is that Matcha is disabled. And canonically, the only evidence that supports this is that Matcha’s missing ingredient has ‘greatly’ affected her personality. But we don’t know what the ingredient is, and to what extent she was affected. Making the statement of ‘Matcha is disabled’ is not unequivocal, therefore stating that Butter Roll’s behaviour is unequivocally ableist is not sound when weighed against available evidence.

Back to Butter Roll’s attempts to engage Matcha. In their interactions in BY 13, he addresses her directly without being prompted. Asks her for her opinion, on a project which they were at least implied to have collaborated on:

Now I would agree that BR’s comments regarding Matcha’s status as a failed experiment are certainly insensitive and unkind. I also think they are unmalicious. If we keep in mind the way he views cookies, it’s likely that even if he views Matcha as the product of a failed experiment, the fact she is an experimental failure is just a fact – no more and no less. Once again, the concept of this and/or her missing ingredient being linked to disability is not canon and is a theory that cannot be definitively stated to be a source of prejudice in Butter Roll’s treatment of her.

But referencing the laboratorium storyline, whilst he ruthlessly disposes of dough monsters that he deems as failures, they were not cookies per se (as we would recognise them) – they were blobs of living, raw cookie dough:

His research goal to make the perfect cookie dough ratio was highly specific, and we can see Butter Roll’s rigid thinking in his reaction to the dough creatures back then.

But when that particular mission is done, and the beast doughs are made, still Butter Roll actively engages with Matcha Cookie. It’s possible that he has an ulterior motive, of course, but isn’t it also possible that he collaborated with her and addresses her simply because he desires to know her thoughts? Isn’t this also a possibility that could be considered? Given that he literally asked her opinion? Isn’t this a sign that could signal a desire to include her into his own projects and undertakings as a collaborator?

Which is not what the COD do, by the way (in CRK. I know there are differences in CROB but I am discussing CRK):

So back to the very first point I addressed:

A random thought that hit that doesn't really have any prior digging but in a way Matcha Cookie got attention but it's not the favorable kind. Like, she wants to be seen, in particular for her skills (but she also wants general attention). Butter Roll Cookie gives her attention but it's not really all that good.

Are all Butter Roll’s attempts to engage with her – his asking her opinion on his work, their implied collaboration on the ‘fruits of their experiment’, asking her thoughts on the Dough Trio – are those bad forms of attention? Is it possible that perhaps even if he engages with her in less-than-ideal ways (intrusive, upsetting and insensitive) in some capacity, that the other attempts are equally negative? I don’t think so personally.

We can turn towards the after-finale story:

Once again he refers to their shared collaborative work (‘our experiments’) and asks her if there’s something on her mind – after noting her lingering there, looking out to the ruins of DE’s legacy.

When she remains silent, he says this:

This might seem like an insensitive slight, and perhaps it is insensitive. But Matcha actually does respond to this, and dictates her thoughts on her creator to another person – for the first time we have seen:

The questions that Matcha harboured to herself, we saw traces of back in the laboratorium storyline. But we don’t know if she ever divulged these to another. It’s reasonable to assume she hadn’t – out of pride most likely, not wanting to acknowledge her perceived deficiencies.

(I think it’s interesting to consider if Matcha were intended to possess ‘incredibly dark powers’, and does not (doesn’t match her elemental power), is this the metric against which her status of a ‘experimental failure’ is held against? Not the fact that she is missing something another ‘ordinary’ cookie would possess – but something very specific and extraordinary that DE desired?)

In any case, Butter Roll responds to her:

This reads to me like an objective statement from Butter Roll. It’s not intended to be particularly comforting, but is a truthful assessment of Matcha’s predicament. Her creator is gone. Even if Matcha comes to know her composition in its fullness, and the extents of her abilities, who can tell her of DE’s intention behind making her but DE herself? Even the castle that DE presumably created her in, and all potential evidence of Matcha’s intended purpose, is gone.

It’s interesting that he references ‘secrets’ here – plural. There are numerous facets of her that he finds compelling as a researcher. It doesn’t appear as simple as ‘he is only interested in her because of her missing ingredient (‘He is utterly fascinated by her, with the caveat being that it's for her disability only’). If his interest in her only went as far as her missing ingredient, why wouldn’t he simply state this now? I don’t believe he’s capable of restraining his honest thoughts, even if it would serve his purposes – he literally referenced her missing ingredient at the start of this discussion. So if he is honest enough to say that, why wouldn't that honesty extend to this expression of him having a broader interest in her? Or wanting to collaborate further with her?

And what of Matcha's feelings? Well it's hard to ascertain for certain what they are in the finale scene. But she's talking to Butter Roll, engaging with him. Are they on better terms now, or is it just the mess they are in which is compelling her to lower her defenses? Difficult to say. But he is interested in what's on her mind. That can't be disputed. She desired that before, right? To be acknowledged, to be asked her opinion, to be regarded as someone with input.

A random thought that hit that doesn't really have any prior digging but in a way Matcha Cookie got attention but it's not the favorable kind. Like, she wants to be seen, in particular for her skills (but she also wants general attention). Butter Roll Cookie gives her attention but it's not really all that good.

Matcha does desire recognition, this is correct. In particular she desires to be regarded not only on equal terms as the other COD, but as someone who can outmanoeuvre and overpower them:

Besides her resentment it’s not necessarily that she wants to hurt them, it seems more that she desires to be regarded as someone who could. Someone with more capability than they possess:

However, stating ‘Butter Roll Cookie gives her attention but it's not really all that good’ could imply that there’s ill intent on Butter Roll’s part. But we don’t receive any of Butter Roll’s internal narrative throughout this story, nor any of the main storyline (only the Hotel Costume story are we explicitly given anything from his POV). It’s still reasonable though to assign a value on the type of attention given by what it actually entails, so we can discuss this further.

He is utterly fascinated by her, with the caveat being that it's for her disability only and he goes about it by essentially dehumanizing her.

I would agree he is fascinated by her, and her missing ingredient is a subject of intense interest for him given his research fixation. However, I think stating ‘it’s for her disability only’ is reductive. His interest in her is motivated by his intrigue regarding her ingredient composition, but I’d argue he views all cookies through this lens:

BR’s ascension dialogue. Also, dialogue from his official introduction video on youtube:

(KR, translated to EN (using google): Sometimes I wonder about my own recipe, too. I wish I could experiment with it someday, though…)

(EN dialogue.)

So I would say it’s reasonable to assert that he views all cookies, himself included, through the lens of his hyperfixation (cookie research). Which is not to say this isn’t essentially objectification – reducing cookies to their base ingredients and properties – it is. But there’s this idea floating around that Matcha is a unique recipient of this particular perspective which we can see by his dialogue isn’t true – he at least applies this view to himself.

If we go back to the point made, again, attributing disability to Matcha’s missing ingredient is headcanon. Fan theory. It’s not to say there isn’t an argument that can be made for it, but that’s different from stating it as authorial/canonical fact as seems to be the case here (many such cases). The only thing that her missing ingredient is definitely stated to affect is her personality (which could be a potential indicator of neurodivergence, but that’s somewhat flimsy evidence in of itself). It’s for this reason that I don’t think that he ‘dehumanises’ her via these interactions:

I do think he objectifies other cookies by means of viewing them through the lens of his fixation – their recipes. We are shown that he explicitly applies this view to himself, and we can infer he sees all cookies this way. And yes, he does want samples of her. He also tried to obtain samples of other cookies in the past:

Which sounds dubious at best. But it’s implied that he had at least attempted to acquire samples of other cookies, who probably didn’t have a unique composition as Matcha does. Given that, it’s unsurprising that he wants to procure a sample of Matcha. What I want to point out is that this isn’t a desire that is uniquely attributable to Matcha alone, even with her missing ingredient. He’s tried to do it before, with other cookies!

A majority of the time when he talks to her, he brings up her missing ingredient and acts as if she has a similar thoughts. If I recall (and I double checked for this and it's true) Licorice Cookie tells Butter Roll Cookie that not everyone is obsessed with research as him.

He brought up her missing ingredient four times to my knowledge – once we already mentioned, the instance OP mentioned, when she was destroying the lab, and once more in the finale:

It’s interesting that Licorice makes that comment. An obsession (with cookie research, generally speaking) is an apt description, and again, signals Butter Roll’s lack of social awareness. Which doesn’t excuse his actions, but it puts forth the possibility that he’s not deliberately targeting her. I actually think there’s sufficient evidence that signals he is neurodivergent – I made an analysis post on the hotel costume story here which details that.

But by the end of the laboratorium storyline, he essentially concedes that he underestimated her and agrees to stop provoking her:

But in any case, whilst I agree they were certainly insensitive statements, I don’t see sufficient evidence that he had intent to denigrate her nor holds the view that she is lesser than he is. Because we can see that he does address her as a peer, in their kingdom interaction:

This excellent analysis of the same dialogue (particularly the honorifics used) in the original Korean text really accentuates the intention of the author in their interaction. [It’s worth pointing out that a Korean native speaker backed up this interpretation!]

[quote from the aforementioned post, from Malamilkbeats] When Butter Roll Cookie generally speaks in a Ha-ge-che style, it suggests he isn't trying to be "friends" (which would be Hae-yo-che), but he also isn't being a "bully" (which would be Hae-ra-che). He stays in his role as inquisitive.

And Matcha Cookie very much does not like this nor Butter Roll Cookie. I believe it's implied or outright stated that her missing ingredient plays a factor into why she's treated poorly (could be wrong tho) so I imagine the constant reminder and prodding of her missing ingredient would make her not feel good.

I agree that Matcha seems to hold some negative sentiment towards Butter Roll, I won’t contest that. However, their Kingdom interaction shows her addressing him, trying to mock/tease him. this suggests their relationship is at least somewhat reciprocal, where she will seek him out to antagonise him in response to a perceived slight from Butter Roll in turn.

However, I broadly disagree with the missing ingredient being the reason why the COD treat her badly (she interferes with their plans, and does not fit DE’s standard of utility, so Matcha is ranked at the bottom of the COD hierarchy (IMO this is why Matcha’s specific fantasy is DE saying ‘Who knew Matcha could be more useful than I am?’). But even if this is the case and Matcha’s missing ingredient is the scapegoat, it doesn’t mean that BR is knowingly or purposefully pouring salt on that wound – and how is the COD’s mistreatment of Matcha at large the fault of Butter Roll specifically? Why is their behaviour excusable but his isn’t?

Although to be fair even if her disability isn't why she's treated how she is by the other COD, Butter Roll Cookie's behavior regarding her disability would make pretty much any disabled person uncomfortable.

Once again, this reads to me as an interpretation (Matcha’s missing ingredient = disability) that is stated as fact, that is then applied to a narrative (Butter Roll hyperfixating on Matcha’s unique ingredient composition) which is equated to a real-life societal issue (ableism). It’s not that I don’t think we can apply themes of oppression and discrimination to CRK storylines, but in this instance the crux of this point is that Matcha is disabled. And canonically, the only evidence that supports this is that Matcha’s missing ingredient has ‘greatly’ affected her personality. But we don’t know what the ingredient is, and to what extent she was affected. Making the statement of ‘Matcha is disabled’ is not unequivocal, therefore stating that Butter Roll’s behaviour is unequivocally ableist is not sound when weighed against available evidence.

Back to Butter Roll’s attempts to engage Matcha. In their interactions in BY 13, he addresses her directly without being prompted. Asks her for her opinion, on a project which they were at least implied to have collaborated on:

Now I would agree that BR’s comments regarding Matcha’s status as a failed experiment are certainly insensitive and unkind. I also think they are unmalicious. If we keep in mind the way he views cookies, it’s likely that even if he views Matcha as the product of a failed experiment, the fact she is an experimental failure is just a fact – no more and no less. Once again, the concept of this and/or her missing ingredient being linked to disability is not canon and is a theory that cannot be definitively stated to be a source of prejudice in Butter Roll’s treatment of her.

But referencing the laboratorium storyline, whilst he ruthlessly disposes of dough monsters that he deems as failures, they were not cookies per se (as we would recognise them) – they were blobs of living, raw cookie dough:

His research goal to make the perfect cookie dough ratio was highly specific, and we can see Butter Roll’s rigid thinking in his reaction to the dough creatures back then.

But when that particular mission is done, and the beast doughs are made, still Butter Roll actively engages with Matcha Cookie. It’s possible that he has an ulterior motive, of course, but isn’t it also possible that he collaborated with her and addresses her simply because he desires to know her thoughts? Isn’t this also a possibility that could be considered? Given that he literally asked her opinion? Isn’t this a sign that could signal a desire to include her into his own projects and undertakings as a collaborator?

Which is not what the COD do, by the way (in CRK. I know there are differences in CROB but I am discussing CRK):

So back to the very first point I addressed:

A random thought that hit that doesn't really have any prior digging but in a way Matcha Cookie got attention but it's not the favorable kind. Like, she wants to be seen, in particular for her skills (but she also wants general attention). Butter Roll Cookie gives her attention but it's not really all that good.

Are all Butter Roll’s attempts to engage with her – his asking her opinion on his work, their implied collaboration on the ‘fruits of their experiment’, asking her thoughts on the Dough Trio – are those bad forms of attention? Is it possible that perhaps even if he engages with her in less-than-ideal ways (intrusive, upsetting and insensitive) in some capacity, that the other attempts are equally negative? I don’t think so personally.

We can turn towards the after-finale story:

Once again he refers to their shared collaborative work (‘our experiments’) and asks her if there’s something on her mind – after noting her lingering there, looking out to the ruins of DE’s legacy.

When she remains silent, he says this:

This might seem like an insensitive slight, and perhaps it is insensitive. But Matcha actually does respond to this, and dictates her thoughts on her creator to another person – for the first time we have seen:

The questions that Matcha harboured to herself, we saw traces of back in the laboratorium storyline. But we don’t know if she ever divulged these to another. It’s reasonable to assume she hadn’t – out of pride most likely, not wanting to acknowledge her perceived deficiencies.

(I think it’s interesting to consider if Matcha were intended to possess ‘incredibly dark powers’, and does not (doesn’t match her elemental power), is this the metric against which her status of a ‘experimental failure’ is held against? Not the fact that she is missing something another ‘ordinary’ cookie would possess – but something very specific and extraordinary that DE desired?)

In any case, Butter Roll responds to her:

This reads to me like an objective statement from Butter Roll. It’s not intended to be particularly comforting, but is a truthful assessment of Matcha’s predicament. Her creator is gone. Even if Matcha comes to know her composition in its fullness, and the extents of her abilities, who can tell her of DE’s intention behind making her but DE herself? Even the castle that DE presumably created her in, and all potential evidence of Matcha’s intended purpose, is gone.

It’s interesting that he references ‘secrets’ here – plural. There are numerous facets of her that he finds compelling as a researcher. It doesn’t appear as simple as ‘he is only interested in her because of her missing ingredient (‘He is utterly fascinated by her, with the caveat being that it's for her disability only’). If his interest in her only went as far as her missing ingredient, why wouldn’t he simply state this now? I don’t believe he’s capable of restraining his honest thoughts, even if it would serve his purposes – he literally referenced her missing ingredient at the start of this discussion. So if he is honest enough to say that, why wouldn't that honesty extend to this expression of him having a broader interest in her? Or wanting to collaborate further with her?

And what of Matcha's feelings? Well it's hard to ascertain for certain what they are in the finale scene. But she's talking to Butter Roll, engaging with him. Are they on better terms now, or is it just the mess they are in which is compelling her to lower her defenses? Difficult to say. But he is interested in what's on her mind. That can't be disputed. She desired that before, right? To be acknowledged, to be asked her opinion, to be regarded as someone with input.

A random thought that hit that doesn't really have any prior digging but in a way Matcha Cookie got attention but it's not the favorable kind. Like, she wants to be seen, in particular for her skills (but she also wants general attention). Butter Roll Cookie gives her attention but it's not really all that good.

Matcha does desire recognition, this is correct. In particular she desires to be regarded not only on equal terms as the other COD, but as someone who can outmanoeuvre and overpower them:

Besides her resentment it’s not necessarily that she wants to hurt them, it seems more that she desires to be regarded as someone who could. Someone with more capability than they possess:

However, stating ‘Butter Roll Cookie gives her attention but it's not really all that good’ could imply that there’s ill intent on Butter Roll’s part. But we don’t receive any of Butter Roll’s internal narrative throughout this story, nor any of the main storyline (only the Hotel Costume story are we explicitly given anything from his POV). It’s still reasonable though to assign a value on the type of attention given by what it actually entails, so we can discuss this further.

He is utterly fascinated by her, with the caveat being that it's for her disability only and he goes about it by essentially dehumanizing her.

I would agree he is fascinated by her, and her missing ingredient is a subject of intense interest for him given his research fixation. However, I think stating ‘it’s for her disability only’ is reductive. His interest in her is motivated by his intrigue regarding her ingredient composition, but I’d argue he views all cookies through this lens:

BR’s ascension dialogue. Also, dialogue from his official introduction video on youtube:

(KR, translated to EN (using google): Sometimes I wonder about my own recipe, too. I wish I could experiment with it someday, though…)

(EN dialogue.)

So I would say it’s reasonable to assert that he views all cookies, himself included, through the lens of his hyperfixation (cookie research). Which is not to say this isn’t essentially objectification – reducing cookies to their base ingredients and properties – it is. But there’s this idea floating around that Matcha is a unique recipient of this particular perspective which we can see by his dialogue isn’t true – he at least applies this view to himself.

If we go back to the point made, again, attributing disability to Matcha’s missing ingredient is headcanon. Fan theory. It’s not to say there isn’t an argument that can be made for it, but that’s different from stating it as authorial/canonical fact as seems to be the case here (many such cases). The only thing that her missing ingredient is definitely stated to affect is her personality (which could be a potential indicator of neurodivergence, but that’s somewhat flimsy evidence in of itself). It’s for this reason that I don’t think that he ‘dehumanises’ her via these interactions:

I do think he objectifies other cookies by means of viewing them through the lens of his fixation – their recipes. We are shown that he explicitly applies this view to himself, and we can infer he sees all cookies this way. And yes, he does want samples of her. He also tried to obtain samples of other cookies in the past:

Which sounds dubious at best. But it’s implied that he had at least attempted to acquire samples of other cookies, who probably didn’t have a unique composition as Matcha does. Given that, it’s unsurprising that he wants to procure a sample of Matcha. What I want to point out is that this isn’t a desire that is uniquely attributable to Matcha alone, even with her missing ingredient. He’s tried to do it before, with other cookies!

A majority of the time when he talks to her, he brings up her missing ingredient and acts as if she has a similar thoughts. If I recall (and I double checked for this and it's true) Licorice Cookie tells Butter Roll Cookie that not everyone is obsessed with research as him.

He brought up her missing ingredient four times to my knowledge – once we already mentioned, the instance OP mentioned, when she was destroying the lab, and once more in the finale:

It’s interesting that Licorice makes that comment. An obsession (with cookie research, generally speaking) is an apt description, and again, signals Butter Roll’s lack of social awareness. Which doesn’t excuse his actions, but it puts forth the possibility that he’s not deliberately targeting her. I actually think there’s sufficient evidence that signals he is neurodivergent – I made an analysis post on the hotel costume story here which details that.

But by the end of the laboratorium storyline, he essentially concedes that he underestimated her and agrees to stop provoking her:

But in any case, whilst I agree they were certainly insensitive statements, I don’t see sufficient evidence that he had intent to denigrate her nor holds the view that she is lesser than he is. Because we can see that he does address her as a peer, in their kingdom interaction:

This excellent analysis of the same dialogue (particularly the honorifics used) in the original Korean text really accentuates the intention of the author in their interaction. [It’s worth pointing out that a Korean native speaker backed up this interpretation!]

[quote from the aforementioned post, from Malamilkbeats] When Butter Roll Cookie generally speaks in a Ha-ge-che style, it suggests he isn't trying to be "friends" (which would be Hae-yo-che), but he also isn't being a "bully" (which would be Hae-ra-che). He stays in his role as inquisitive.

And Matcha Cookie very much does not like this nor Butter Roll Cookie. I believe it's implied or outright stated that her missing ingredient plays a factor into why she's treated poorly (could be wrong tho) so I imagine the constant reminder and prodding of her missing ingredient would make her not feel good.

I agree that Matcha seems to hold some negative sentiment towards Butter Roll, I won’t contest that. However, their Kingdom interaction shows her addressing him, trying to mock/tease him. this suggests their relationship is at least somewhat reciprocal, where she will seek him out to antagonise him in response to a perceived slight from Butter Roll in turn.

However, I broadly disagree with the missing ingredient being the reason why the COD treat her badly (she interferes with their plans, and does not fit DE’s standard of utility, so Matcha is ranked at the bottom of the COD hierarchy (IMO this is why Matcha’s specific fantasy is DE saying ‘Who knew Matcha could be more useful than I am?’). But even if this is the case and Matcha’s missing ingredient is the scapegoat, it doesn’t mean that BR is knowingly or purposefully pouring salt on that wound – and how is the COD’s mistreatment of Matcha at large the fault of Butter Roll specifically? Why is their behaviour excusable but his isn’t?

Although to be fair even if her disability isn't why she's treated how she is by the other COD, Butter Roll Cookie's behavior regarding her disability would make pretty much any disabled person uncomfortable.

Once again, this reads to me as an interpretation (Matcha’s missing ingredient = disability) that is stated as fact, that is then applied to a narrative (Butter Roll hyperfixating on Matcha’s unique ingredient composition) which is equated to a real-life societal issue (ableism). It’s not that I don’t think we can apply themes of oppression and discrimination to CRK storylines, but in this instance the crux of this point is that Matcha is disabled. And canonically, the only evidence that supports this is that Matcha’s missing ingredient has ‘greatly’ affected her personality. But we don’t know what the ingredient is, and to what extent she was affected. Making the statement of ‘Matcha is disabled’ is not unequivocal, therefore stating that Butter Roll’s behaviour is unequivocally ableist is not sound when weighed against available evidence.

Back to Butter Roll’s attempts to engage Matcha. In their interactions in BY 13, he addresses her directly without being prompted. Asks her for her opinion, on a project which they were at least implied to have collaborated on:

Now I would agree that BR’s comments regarding Matcha’s status as a failed experiment are certainly insensitive and unkind. I also think they are unmalicious. If we keep in mind the way he views cookies, it’s likely that even if he views Matcha as the product of a failed experiment, the fact she is an experimental failure is just a fact – no more and no less. Once again, the concept of this and/or her missing ingredient being linked to disability is not canon and is a theory that cannot be definitively stated to be a source of prejudice in Butter Roll’s treatment of her.

But referencing the laboratorium storyline, whilst he ruthlessly disposes of dough monsters that he deems as failures, they were not cookies per se (as we would recognise them) – they were blobs of living, raw cookie dough:

His research goal to make the perfect cookie dough ratio was highly specific, and we can see Butter Roll’s rigid thinking in his reaction to the dough creatures back then.

But when that particular mission is done, and the beast doughs are made, still Butter Roll actively engages with Matcha Cookie. It’s possible that he has an ulterior motive, of course, but isn’t it also possible that he collaborated with her and addresses her simply because he desires to know her thoughts? Isn’t this also a possibility that could be considered? Given that he literally asked her opinion? Isn’t this a sign that could signal a desire to include her into his own projects and undertakings as a collaborator?

Which is not what the COD do, by the way (in CRK. I know there are differences in CROB but I am discussing CRK):

So back to the very first point I addressed:

A random thought that hit that doesn't really have any prior digging but in a way Matcha Cookie got attention but it's not the favorable kind. Like, she wants to be seen, in particular for her skills (but she also wants general attention). Butter Roll Cookie gives her attention but it's not really all that good.

Are all Butter Roll’s attempts to engage with her – his asking her opinion on his work, their implied collaboration on the ‘fruits of their experiment’, asking her thoughts on the Dough Trio – are those bad forms of attention? Is it possible that perhaps even if he engages with her in less-than-ideal ways (intrusive, upsetting and insensitive) in some capacity, that the other attempts are equally negative? I don’t think so personally.

We can turn towards the after-finale story:

Once again he refers to their shared collaborative work (‘our experiments’) and asks her if there’s something on her mind – after noting her lingering there, looking out to the ruins of DE’s legacy.

When she remains silent, he says this:

This might seem like an insensitive slight, and perhaps it is insensitive. But Matcha actually does respond to this, and dictates her thoughts on her creator to another person – for the first time we have seen:

The questions that Matcha harboured to herself, we saw traces of back in the laboratorium storyline. But we don’t know if she ever divulged these to another. It’s reasonable to assume she hadn’t – out of pride most likely, not wanting to acknowledge her perceived deficiencies.

(I think it’s interesting to consider if Matcha were intended to possess ‘incredibly dark powers’, and does not (doesn’t match her elemental power), is this the metric against which her status of a ‘experimental failure’ is held against? Not the fact that she is missing something another ‘ordinary’ cookie would possess – but something very specific and extraordinary that DE desired?)

In any case, Butter Roll responds to her:

This reads to me like an objective statement from Butter Roll. It’s not intended to be particularly comforting, but is a truthful assessment of Matcha’s predicament. Her creator is gone. Even if Matcha comes to know her composition in its fullness, and the extents of her abilities, who can tell her of DE’s intention behind making her but DE herself? Even the castle that DE presumably created her in, and all potential evidence of Matcha’s intended purpose, is gone.

It’s interesting that he references ‘secrets’ here – plural. There are numerous facets of her that he finds compelling as a researcher. It doesn’t appear as simple as ‘he is only interested in her because of her missing ingredient (‘He is utterly fascinated by her, with the caveat being that it's for her disability only’). If his interest in her only went as far as her missing ingredient, why wouldn’t he simply state this now? I don’t believe he’s capable of restraining his honest thoughts, even if it would serve his purposes – he literally referenced her missing ingredient at the start of this discussion. So if he is honest enough to say that, why wouldn't that honesty extend to this expression of him having a broader interest in her? Or wanting to collaborate further with her?

And what of Matcha's feelings? Well it's hard to ascertain for certain what they are in the finale scene. But she's talking to Butter Roll, engaging with him. Are they on better terms now, or is it just the mess they are in which is compelling her to lower her defenses? Difficult to say. But he is interested in what's on her mind. That can't be disputed. She desired that before, right? To be acknowledged, to be asked her opinion, to be regarded as someone with input.