This Caramel Apple Stuffed French Toast Casserole is a cozy, make-ahead breakfast that's perfect for fall mornings, holiday brunch, or feeding a crowd. With soft layers of custard-soaked brioche, spiced caramelized apples, and a decadent drizzle of caramel sauce, it tastes just like dessert, but it's perfectly acceptable for breakfast.Easy to prep the night before and bake in the morning, this casserole brings all the warmth and flavor of autumn to your table with minimal morning effort.