Unbelievable Blueberry French Toast Casserole

Name: Unbelievable Blueberry French Toast Casserole
Prep time: 25 min
Cook time: 50 min
Total time: 1 h 15 min
Cuisine: American
Ingredients: 1 (12–14-ounce/340–400g) loaf French bread, sourdough bread, or challah*; 1 cup (140g) fresh or frozen blueberries*; 8 large eggs; 2 and 1/4 cups (540ml) whole milk; 1/2 teaspoon ground cinnamon; 3/4 cup (150g) packed light brown sugar; 1 Tablespoon (15ml) pure vanilla extract; 1/3 cup (69g) packed light or dark brown sugar; 1/3 cup (41g) all-purpose flour (spooned & leveled); 6 Tablespoons (85g) unsalted butter, cold and cubed; optional: extra blueberries, maple syrup, and/or confectioners’ sugar for topping

Instructions

Prep:25minCook:50min

There's not one word more perfect than "unbelievable" to describe this overnight blueberry French toast casserole. The casserole benefits from sitting in the refrigerator overnight before baking, so this is an excellent make-ahead brunch recipe!

Updated at: Tue, 22 Jul 2025 03:47:49 GMT