Let’s talk for a moment about breakfast stuffings, and some variations on that theme that you could treat a character (or yourself) to:
A classic hearty breakfast with eggs, bacon or sausage, and toast or a fluffy biscuit. Perhaps a short stack of pancakes or some crispy fried potatoes on the side, or some fruit to help cut through all those heavy foods. To be enjoyed with orange juice and a hot beverage. This menu is pretty versatile as far as fic types go! You could easily have a character wind up heavy, dazed, and very content afterwards, or have them eat to the point of an aching stomach if you prefer.
Continental breakfasts are known for being light, but they’re also generally served buffet-style, so a character can eat to their heart’s content. Let’s not underestimate the versatility of bread -- a character could fill up on bagels with cream cheese, toast with peanut butter, croissants with butter and jam, and pastries of all kinds (cheese danishes, cinnamon rolls, pain au chocolat, coffee cake, blueberry muffins, apple turnovers, glazed doughnuts, I could go on...) Plus cold meats and cheeses, fruits of all kinds, and yogurt or cottage cheese. There’s something fun about the kind of fullness that results from filling up on “light” foods -- not terribly heavy or sleepy, just immensely stretched out.
A big sweet breakfast is a great option for characters with a sweet tooth, or if you want to write a fic where that stuffed stomach doesn’t feel so good afterwards. Think a big stack of pancakes or a pile of french toast with whipped cream, chocolate chips, and/or sweet fruit compote. Optional additions of a giant cinnamon roll that just can’t be passed up and a big mug of hot chocolate to drink.
It’s hard not to overindulge on a fancy brunch! And from a writing perspective, it can really fun to describe characters getting to treat themselves to something a little extravagant. There are so many possibilities for the main dish: omelettes loaded with cheese and vegetables, eggs benedict (perhaps with smoked salmon), scrambler bowls with eggs and meat served over fried potatoes, breakfast tacos, bagel sandwiches, quiche... Add on sides of fruit and bread, plus some juice and coffee (or a few cocktails, if your character would be into boozy brunch) and you’ve got the perfect recipe for a very full and well-treated tummy.
If you’re looking for something more simple, oatmeal is a really good food to fill up on. It falls into the same camp as potatoes, rice, and pasta -- heavy yet easy to digest, and so likely to provide a really satisfying feeling of fullness without troubling your stomach. It’s also easy to dress up! Add sprinkles of cinnamon, brown sugar, or maple syrup, and stir in dried fruit, chopped nuts, or a little bit of milk or cream, and you’ll have something both filling and delicious.
