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Best Overnight French Toast Casserole


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  • Author: Isabella
  • Total Time: Approx. 5 hours
  • Yield: 8-10 servings
  • Diet: Vegetarian

Description

This Overnight French Toast Casserole recipe combines cinnamon, vanilla, and custard-soaked bread for a make-ahead breakfast that’s perfect for holidays or brunch gatherings. Serve a crowd with this golden, crunchy-topped dish!


Ingredients

For the Casserole:

1 loaf of French bread (approx. 12 cups cubed, day-old preferred)

8 large eggs

2 cups whole milk

1 cup heavy cream

1/2 cup granulated sugar

1 tbsp vanilla extract

1 tsp ground cinnamon

1/4 tsp salt

1/4 tsp ground nutmeg (optional)

For the Topping:

1/2 cup unsalted butter (melted)

1/4 cup brown sugar (packed)

1/2 tsp ground cinnamon

Pinch of salt

1/4 cup chopped pecans or walnuts (optional)


Instructions

  1. Prepare the Casserole:
    • Grease a 9×13-inch baking dish.
    • Cut French bread into cubes and spread evenly in the dish.
  2. Make the Custard:
    • In a mixing bowl, whisk eggs, milk, cream, sugar, vanilla, cinnamon, salt, and nutmeg (if using).
    • Pour the mixture evenly over the bread cubes. Press gently to ensure all bread is soaked.
    • Cover with plastic wrap or foil and refrigerate for 4 hours or overnight.
  3. Make the Topping:
    • Combine melted butter, brown sugar, cinnamon, and salt. Stir until smooth.
  4. Bake the Casserole:
    • Preheat oven to 350°F (175°C).
    • Drizzle the topping over the soaked bread and sprinkle nuts if desired.
    • Bake uncovered for 45-50 minutes or until the top is golden and the center is set.
  5. Serve:
    • Let the casserole rest for 5 minutes before slicing.
    • Serve with maple syrup, powdered sugar, or fresh berries.

Notes

Bread Choice: Brioche, challah, or sourdough are great alternatives.

Make-Ahead: Can be prepared up to 24 hours in advance.

Nut-Free: Skip the nuts in the topping if needed.

Storage: Refrigerate leftovers for up to 3 days or freeze (without topping) for 2 months.

  • Prep Time: 15 minutes (plus 4+ hours refrigeration)
  • Cook Time: 45-50 minutes
  • Category: Breakfast, Brunch
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 8-10 servings