In a medium mixing bowl, whisk the large egg with milk. Add in the vanilla extract and continue to mix. Whisk in 2 tablespoons of the powdered peanut butter until combined, about 1 minute.
Heat griddle over medium heat and spray with non-stick cooking spray.
Drop bread slices one at a time into mixture, coating both sides evenly. Place coated slice on griddle.
Repeat for all slices.
Cook about 2 to 3 minutes per side on griddle, turning and repeating cooking on alternate side.
Remove from heat.
To prepare maple yogurt frosting, mix 1 tablespoon of remaining powdered peanut butter into the yogurt. Add in 1 teaspoon of maple syrup and stir until combined.
To assemble the French Toast, spread 1 ounce of the yogurt frosting over each slice. Repeat for each slice.
Serve with a cup of coffee, milk or tea and garnish with your favorite fruit.
Notes
If you prefer more traditional French Toast, omit powdered peanut butter and substitute ground cinnamon at 1/2 teaspoon.