Mix your filling ingredients, and set aside.
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 ⅙ of the batter on the griddle. Spread it with the back of a spoon to make it a thin layer.
Spoon topping in the center, as in video.
Top with another ⅙ of the batter, and spread to cover the bottom pancake layer. This will also spread the filling.
Flip after about a minute.
Cook for another couple of minutes.
Repeat steps 6-10 to make two more stuffed pancakes.
Enjoy! These should stay good for several days in the refrigerator.