Spray your nonstick griddle with cooking spray or rub a little coconut oil on it.
Preheat your griddle over a low flame.
Beat the egg whites, protein powder, and cinnamon until smooth and fluffy.
Wait until the griddle is hot enough (when drops of water sizzle up).
Spoon a little batter on the griddle. Spread it with the back of a spoon to make it a thin layer.
Place ⅓ of the banana slices on top. Leave room around the edges, as in photo.
Top with ½ tablespoon of peanut butter, then more pancake batter.
Spread the batter to cover the bottom pancake layer. This will also spread the peanut butter.
Flip pancake and cook for another couple of minutes.
Repeat to make two more stuffed pancakes.
Enjoy! These should stay good for several days in the refrigerator.