This Banana Nut French Toast Casserole is a rich and comforting breakfast dish featuring caramelized bananas, crunchy nuts, and a warm custard-soaked bread base. It’s easy to prepare the night before, making it perfect for brunch, holiday mornings, or a special weekend treat. With a crispy golden topping and a soft, custardy center, this casserole is a delightful way to start the day.