Preheat your oven to 350°F (175°C) and grease a 9x13 inch baking dish with butter or cooking spray.

Cut half of the white bread into cubes and spread them evenly across the bottom of the greased baking dish.

Layer half of the ham and turkey over the bread cubes and then sprinkle half of the Swiss cheese on top.

Add the remaining bread cubes over the meat and cheese layers.

In a mixing bowl, whisk together the eggs, milk, maple syrup, salt, and pepper until well blended.

Pour the egg mixture evenly over the layered bread and fillings in the baking dish.

Drizzle the melted butter generously over the top of the casserole.

Cover the dish with foil and bake for 30 minutes. After 30 minutes, remove the foil and bake for an additional 15-20 minutes.

Remove from the oven and let it cool for a few minutes before serving.