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Ultimate Overnight French Toast Casserole with Cinnamon Streusel

A close-up of a thick, moist slice of french toast casserole topped with gooey cinnamon streusel.
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Create a comforting, crowd-pleasing breakfast bake that requires minimal morning effort. This French toast casserole soaks bread in a rich custard overnight, topped with a buttery cinnamon streusel, and bakes up golden and soft.

Ingredients

Scale
  • 1 loaf (about 1 pound) day-old bread (brioche, challah, or thick-cut white bread), cut into 1-inch cubes
  • 12 large eggs
  • 2 cups whole milk
  • 1 cup heavy cream
  • 1 teaspoon vanilla extract
  • 1 teaspoon ground cinnamon
  • 1/4 teaspoon ground nutmeg
  • 1/4 teaspoon salt
  • 1/2 cup granulated sugar (for custard)
  • 1/2 cup (1 stick) unsalted butter, melted (for topping)
  • 1 cup all-purpose flour (for topping)
  • 1 cup packed light brown sugar (for topping)
  • 1 teaspoon ground cinnamon (for topping)

Instructions

  1. Lightly grease a 9×13 inch baking dish. Arrange the bread cubes evenly in the prepared dish.
  2. In a large bowl, whisk together the eggs, milk, heavy cream, vanilla extract, cinnamon, nutmeg, salt, and granulated sugar until fully combined. This creates your rich custard.
  3. Slowly pour the custard mixture evenly over the bread cubes, pressing down gently to help the bread absorb the liquid.
  4. Cover the baking dish tightly with plastic wrap. Refrigerate for at least 4 hours, or preferably overnight, to allow the bread to fully soak.
  5. When ready to bake, preheat your oven to 350 degrees Fahrenheit. Remove the plastic wrap.
  6. Prepare the cinnamon streusel topping: In a medium bowl, combine the melted butter, flour, brown sugar, and the extra teaspoon of cinnamon. Use your fingers or a fork to mix until coarse crumbs form.
  7. Sprinkle the streusel topping evenly over the soaked bread.
  8. Bake for 45 to 55 minutes, or until the casserole is puffed, golden brown on top, and the center is set (a knife inserted near the center comes out mostly clean).
  9. Let the French toast casserole rest for 10 minutes before slicing and serving warm. Serve with maple syrup or powdered sugar.

Notes

  • Using day-old bread prevents the casserole from becoming too mushy during the long soak time.
  • For a richer flavor, substitute half of the milk with half-and-half.
  • This make-ahead breakfast bake is perfect for feeding a crowd at brunch or holiday gatherings.

Nutrition

Find it online: https://delishcraze.com/french-toast-casserole-ultimate-overnight-bake/