Sweet and Fluffy Overnight French Toast Casserole

Indulge in this sweet and fluffy Overnight French Toast Casserole with a crunchy cinnamon sugar crumble topping. Perfect for breakfast or brunch, this make-ahead dish is easy to prepare and sure to impress your guests. Enjoy a warm, comforting treat with layers of custard-soaked French bread, topped with a delightful crumble.