01 -
Combine the egg, Greek yogurt, ground cinnamon, and vanilla extract in a large bowl. Whisk thoroughly until evenly blended.
02 -
Add protein powder and milk to the mixture. Whisk until smooth and free of lumps. Adjust consistency with an additional 15-30 milliliters of milk if needed.
03 -
Dip each bread slice into the protein custard, ensuring one side is fully saturated. Flip and soak the opposite side similarly.
04 -
Heat a skillet over medium heat and lightly grease with cooking spray or butter. Place soaked bread slices on the skillet and cook each side for 2 to 3 minutes until golden brown and edges are slightly crisp.
05 -
Plate the cooked slices and serve with your preferred toppings, such as additional Greek yogurt and fresh banana slices.