For the Apple Pie French Toast:
- 16 oz French bread (or thick-sliced bread like brioche, cubed): French bread is a great option for this casserole because of its ability to soak up the custard without falling apart. However, you can also use other types of bread, like challah or brioche, for a richer, denser texture.
- 1 ½ teaspoon cinnamon (or ½ cinnamon, apple pie spice combo): The cinnamon adds a warm, comforting flavor to the bread. For an added depth of flavor, you can mix it with apple pie spice, which typically includes nutmeg, allspice, and ginger.
- 6 large eggs: Eggs are the base of the custard, creating the rich, creamy texture that soaks into the bread.
- 2 cups half & half (or whole milk, or heavy cream): Half & half is a perfect balance between cream and milk, adding richness without being too heavy. You can substitute with milk or even heavy cream for a more decadent dish.
- ¼ cup light brown sugar (packed): The brown sugar adds sweetness and a subtle molasses flavor, enhancing the overall richness of the dish.
- 1 tablespoon vanilla extract: Vanilla brings a warm, aromatic note that enhances the flavors of the bread and apple pie filling.
- 1 pinch salt: A small amount of salt helps balance the sweetness and bring out the flavors.
For the Apple Pie Filling:
- 21 oz apple pie filling (1 can): This pre-made filling saves you time, but you can easily make your own if you prefer. The apples are soft and sweet, providing the perfect filling for the casserole. If you make your own, consider adding a little cinnamon or nutmeg to mimic the flavor of store-bought pie filling.
For the Oatmeal Streusel Topping:
- ½ cup old-fashioned oats (or quick cooking oats): The oats give the streusel topping a delightful texture and a subtle nutty flavor.
- ⅓ cup light brown sugar (packed): The brown sugar helps to create a crunchy, caramelized topping.
- ⅓ cup all-purpose flour: The flour binds the topping together, ensuring it crisps up beautifully when baked.
- 3 tablespoons butter (melted): Butter brings richness to the streusel, helping it form that perfect golden, crispy texture.