I suggest you browse the Lynne’s Top Klaine Fics tag. I’m listing a few Klaine fics that I enjoyed that you might not have read.  If you let us know what tropes or type (e.g. fluff, angst, etc) you enjoy, we could narrow the recs. - HKVoyage

Through Different Eyes Verse by GLEEAnna

Blaine Anderson-Berry is in love with his big sister's best friend Kurt Hummel. Will Kurt ever see him as more than a little kid?

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One More Night by @gleefulpoppet

[AU] Based on the wildly popular fan-made video “One More Night” by Alison447. This story is finished and being posted all at one time! 

High school is a caste system where kids fall into certain slots. Popular kids are up in the penthouse, which is where Rachel Berry reigns supreme. She’s got the hottest guy in school and everything she’s ever dreamed of right in front of her. The Invisibles are on the bottom floor. That is where you will find Kurt Hummel, daydreaming about his first kiss and trying to survive the torment each day brings at the hands of bullies and cowards. And then, there is Blaine Anderson. Is he everything he appears to be? Straight, in love with the most popular girl in school, and set to take the lead in the school play? Or is there more to him than anyone knows?

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Mr Congeniality by ifinallyfoundsomeone

Miss. Congeniality!AU

Bomb threats are being sent to the newly made Mr. America pageant and FBI Agent Blaine Anderson has taken up the position of being an undercover agent to save the pageant. With some extreme grooming and guidance from his pageant consultant, Blaine infiltrates the world of Men's pageants. Making some interesting friends, and maybe he even winning the heart of his slave driver pageant consultant, the gorgeous and fascinating, Kurt Hummel.

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The Handcuffing of Kurt Hummel by K8Malloy

A/U. Most of the time, people were charmed by Deputy Sheriff Blaine Anderson, even while receiving a well-deserved traffic ticket. Of course, Kurt Hummel wasn't 'most people'. How long will it take before Kurt finds himself in handcuffs - with Deputy Anderson holding the key?

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In Every Stitch by @quizasvivamos

24-year-old Blaine Anderson and 26-year-old Kurt Hummel are both breakout designers who had gained the attention of the public by competing on the reality television hit Project Runway in their respective seasons. When both are invited back to compete in the All Star challenge, the competition heats up, tension builds between the two, and what happens off camera changes everything.

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High Desert by TwitchySquirrel

You Stole My Breath Away by teilo 

Blaine is an FBI agent assigned to the Art Crime Team. He is investigating a rash of valuable works of art that have been stolen and at one point belonged to Jewish families during World War II.

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Hidden in the Deep by LauGS

Kurt Hummel’s only concern was getting the perfect role in the perfect Broadway show. But when one night he witnesses a real nightmare, Kurt’s focus shifts from saving his career to saving something much more important: his own life.

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Mr. Congeniality by ifinallyfoundsomeone

Bomb threats are being sent to the newly made Mr. America pageant and FBI Agent Blaine Anderson has taken up the position of being an undercover agent to save the pageant. With some extreme grooming and guidance from his pageant consultant, Blaine infiltrates the world of Men’s pageants. Making some interesting friends, and maybe he even winning the heart of his slave driver pageant consultant, the gorgeous and fascinating, Kurt Hummel.

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Trigger Warning by @inkystars

Blaine Anderson is one of the top international spies in the world, but is very insistant upon keeping his husband, Kurt Hummel, in the dark about that matter. Which ends up being a bit of a problem when Kurt is kidnapped 

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The Heir by @klaineanummel

Kurt Hummel is not having a good week. He just got thrown out of his half-sister's wedding, his dad cut him off, and he's being forced to work a real job for the first time in his life. He's pretty sure that things can't possibly get any worse.

That is, of course, until his step-brother Finn (and the only family member he genuinely likes) is found dead at the base of the Hummel Enterprises building.

Although his death is originally ruled a suicide it is soon discovered that it was anything but. Soon, Kurt finds himself thrown headfirst into a dangerous murder investigation; one which somebody does not want him to get out of alive.

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Bang Bang by Afterthenovels

Kurt has a very loud birthday party. Blaine is the police officer who gets the noise complaint. It doesn’t go so well, until it does.

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After Echoes by WasteNoTime

Blaine Anderson is a prostitute whose client is murdered before his eyes. He is thrown into witness protection together with Special Agent Kurt Hummel, whose job is to keep him safe. But, with nosy neighbours and a notorious crime family snapping at their heels, it’s not that easy. Especially when feelings get involved.

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NYPD by inkinmyheartandonthepage

Blaine is a new police officer to NY and is partnered with Noah Puckerman. It's through him that he meets Kurt who will change his life for ever. Cop!Blaine. Klaine! rated T for safety.

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Happy Reading!

Here you go. - HKVoyage

Mr Congeniality by ifinallyfoundsomeone

Miss. Congeniality!AU