Cinnamon sugar and reduced-calorie maple syrup (optional)
In a shallow bowl, using a wire whisk or a fork, beat the egg and egg whites until foamy. Add the milk, vanilla, cinnamon, and nutmeg. Beat well.
Place egg mixture in a large, shallow glass dish. Add bread slices, turning to coat. Cover and refrigerate overnight.
Next morning preheat the oven to 200°. Lightly spray a large nonstick skillet with vegetable cooking spray; heat over medium heat. Place coated bread slices in prepared skillet. Cook until golden brown, turning once, about 1 to 2 minutes per side.
Transfer cooked slices to a plate; keep warm in oven until finished with cooking all slices.
Divide French toast among serving plates. Sprinkle lightly with cinnamon sugar and top with maple syrup. Serve immediately.