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French Toast Breakfast Casserole

Golden brown French toast casserole with streusel topping and maple syrup.

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This French toast casserole transforms a classic breakfast into an easy, crowd-pleasing baked dish. With a crisp, buttery streusel topping and a luxuriously custardy center, it’s perfect for lazy weekends and holiday gatherings. Assemble it the night before for a stress-free, aromatic morning.

Ingredients

Scale
  • 1 loaf (16 oz) day-old French bread or brioche, cut into 1-inch cubes
  • 8 large eggs
  • 2 cups whole milk
  • 1/2 cup heavy cream
  • 1/2 cup granulated sugar
  • 1/4 cup packed light brown sugar
  • 2 teaspoons pure vanilla extract
  • 1 1/2 teaspoons ground cinnamon
  • 1/4 teaspoon ground nutmeg
  • 1/4 teaspoon salt
  • 1/2 cup (1 stick) unsalted butter, melted
  • For the Streusel Topping:
  • 1/2 cup all-purpose flour
  • 1/2 cup packed light brown sugar
  • 1 teaspoon ground cinnamon
  • 1/4 teaspoon salt
  • 1/4 cup (1/2 stick) cold unsalted butter, cubed

Instructions

  1. Grease a 9×13 inch baking dish. Spread the cubed bread evenly in the dish.
  2. In a large bowl, whisk the eggs until frothy. Add milk, cream, both sugars, vanilla, cinnamon, nutmeg, and salt. Whisk until smooth.
  3. While whisking constantly, slowly pour in the melted butter to create a smooth custard.
  4. Pour the custard evenly over the bread. Press down gently to ensure all bread is soaked. Cover and refrigerate overnight or proceed immediately.
  5. When ready to bake, preheat oven to 350°F (175°C). For the streusel, mix flour, brown sugar, cinnamon, and salt. Cut in cold butter until mixture resembles coarse crumbs. Sprinkle evenly over the soaked bread.
  6. Bake for 45-55 minutes, until the top is golden brown and the center is set but slightly jiggly. A knife inserted near the center should come out clean.
  7. Let the casserole rest for 5-10 minutes before serving. Serve with maple syrup, powdered sugar, or fresh fruit.

Notes

Using stale, dry bread is crucial to prevent a soggy texture. The casserole can be assembled and refrigerated up to 24 hours before baking. For a dairy-free version, use unsweetened almond or oat milk and plant-based butter.

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