Add the eggs (or applesauce), cottage cheese, vanilla extract, cinnamon, sweetener, and optional protein powder to a blender.
Blend until the mixture is completely smooth.
Pour the mixture into a shallow dish wide enough to fit the bread slices.
Dip one slice of bread into the mixture and allow it to soak for 1–2 minutes.
Flip the bread and soak the other side until fully coated.
Heat butter or cooking spray in a non-stick skillet or griddle over medium heat.
Place the soaked bread onto the hot skillet.
Cook each side for 2–3 minutes, or until golden brown and cooked through.
Repeat with the remaining bread slices.
Serve the Easy Protein French Toast warm with your favorite toppings.