1/3of a yellow banana(I use a cube of frozen banana)
A splash of almond milk to stir in, more banana slices, peanut butter, nuts, chocolate chips, etc.
Add oats, water, egg whites, powdered peanut butter, and banana to a medium microwave-safe bowl.
Microwave on high for 45 seconds, and then stop and stir. Continue cooking for a total of 2-3 minutes (depending on your microwave), stopping to stir every 30 or 45 seconds, until oats have absorbed the liquid.
Stir in almond milk if desired, and then add toppings.
You can add more egg whites to increase the protein content even more (I've added up to 1/2 cup) if you don't mind a slight texture change. Be sure to stir extra often, as well.