Prepare the custard:
In a shallow bowl, whisk together eggs, milk, vanilla, cinnamon, nutmeg, and a pinch of salt until smooth and fragrant.
Soak the bread:
Dip each bread slice into the custard mixture, allowing it to soak for about 10–15 seconds per side. The bread should absorb the liquid but not fall apart.
Cook the French toast:
Heat 1 tablespoon butter in a large skillet or griddle over medium heat. Place soaked bread slices onto the skillet and cook 2–3 minutes per side, or until golden brown with slightly crisp edges. Transfer to a plate and keep warm.
Caramelize the apples:
In the same skillet, melt 2 tablespoons butter over medium heat. Add sliced apples, brown sugar, and cinnamon. Cook, stirring occasionally, for 6–8 minutes until the apples become tender, glossy, and caramel-like. Stir in maple syrup for extra shine and depth of flavor.
Assemble and serve:
Layer warm French toast slices on a plate, spoon caramelized apples generously over the top, and finish with whipped cream, powdered sugar, or a drizzle of maple syrup. Serve immediately while everything is warm and fragrant.