Natasha:
Rainbow Sherbet Ice Cream

She loves rainbow sherbet ice cream and although you weren't too fond of it, you liked to wake up in the middle of the night and enjoy the cold treat with her. A form of relaxation for the both of you.

Wanda:
Cinnamon Toast

Wanda always told stories of when her and Pietro were little and how much cinnamon toast they'd eat while hiding from their parents. It was nice to trade stories of each other's day while munching on the mouth-watering snack.

Bucky:
Cheez-Itz

The both of you would sneak into the kitchen and bust out one of many hidden stashes of cheese crackers before parking in front of the TV and watching Disney movies until the sun came up.

Tony:
Doughnuts

Your dad never really slept, at least not that you knew of. Sometimes, you'd stay up with him and when you did, he'd order two boxes of fresh doughnuts from a 24 hour bakery. Tony was their favorite customer.

Clint:
Buttermilk Pancakes

Clint had a weird ritual of waking up at exactly 12 midnight every Saturday just to shove you off your bed and demand you help him make pancakes. You always did, but not after chasing him down with a griddle.

Steve:
Mac & Cheese

The cheesy deliciousness of mac-and-cheese was an automatic every time your dad couldn't go to sleep. You'd make a whole pot full for the both of you and once, you both fell asleep on the kitchen table, leaving the stove on.
JARVIS wasn't too happy about it.

Thor:
Brown Sugar Cinnamon Pop-Tarts

You knew how much he loved the sweet treat, but one night, during a Lord of The Rings marathon, he'd forgotten to grab some from the grocery store. So, with Nat's help, you baked some from an online recipe and it was an instant connection...between Thor and the homemade baked good, of course.

Bruce:
Chocolate Chip Cookies & Milk

When Bruce stayed up late nights in the lab, you would make chocolate chip cookies for him and the both of you would silently indulge in the sugar-filled food until it was time for him to start working again. You would deliver some to Tony, too.

Pietro:
Tacos

Speed was a great power, especially when the two of you would be craving tacos in the middle of the night. Wanda had to forcefully limit you and your dad to tacos twice a night after two weeks straight of the food.

Loki:
Vanilla Wafers

After particularly stressful days, your dad would wander through the palace gardens alone. Your favorite snack from Earth soon became his comfort food when you began to join him and share the wafers you'd stolen from Clint on a few visits.