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Overnight French Toast with Berry Topping Recipe

4.8 from 137 reviews

This Overnight French Toast casserole is a deliciously easy make-ahead breakfast recipe. Cubes of day-old French bread are soaked overnight in a rich mixture of milk, eggs, brown sugar, cinnamon, and salt. The next day, a crumbly butter, flour, and sugar topping is added along with fresh or frozen berries before baking to golden perfection. Perfect for serving a crowd, this dish is comforting, sweet, and bursting with warm cinnamon flavor.

Ingredients

Scale

Bread and Custard Base

  • 1 loaf day-old French bread, cubed (about 10 cups)
  • 2 cups whole milk
  • 7 large eggs
  • ¾ cup light brown sugar, packed
  • ¾ teaspoon ground cinnamon
  • Pinch Kosher salt

Topping

  • ½ cup salted butter, cubed
  • ½ cup all-purpose flour
  • ½ cup light brown sugar, packed

Additional

  • 1 cup berries (frozen is fine)

Instructions

  1. Prepare the casserole dish: Butter or grease a 9×13-inch casserole dish thoroughly to prevent sticking.
  2. Layer the bread: Evenly layer the 10 cups of cubed French bread in the dish to create about two layers, ensuring good coverage.
  3. Make the custard mixture: In a medium bowl, beat together 2 cups of whole milk, 7 large eggs, ¾ cup packed light brown sugar, ¾ teaspoon ground cinnamon, and a pinch of Kosher salt until fully combined.
  4. Soak the bread: Pour the egg mixture evenly over the bread cubes, making sure each piece is well coated and saturated with the custard.
  5. Chill overnight: Cover the dish with aluminum foil and refrigerate for at least 3 hours, preferably overnight, to allow the bread to absorb the custard fully.
  6. Prepare the topping: In a medium bowl, use a pastry cutter or two knives to mix ½ cup cubed salted butter, ½ cup all-purpose flour, and ½ cup packed light brown sugar together until the mixture is crumbly. Cover and chill until ready to use.
  7. Preheat the oven: When ready to bake, preheat your oven to 350°F (175°C).
  8. Add topping and berries: Remove the casserole from the fridge, sprinkle the crumbly topping evenly over the soaked bread, then scatter 1 cup of berries evenly on top.
  9. Bake the casserole: Bake uncovered for 50 to 60 minutes, or until the topping is lightly browned and the custard center is completely cooked through.
  10. Serve and enjoy: Let cool slightly before serving. Enjoy this overnight French toast on its own or topped with your favorite syrup for a warm, comforting breakfast treat.

Notes

  • Day-old bread is highly recommended as it better absorbs the custard mixture without becoming mushy.
  • You can substitute whole milk with 2% or any milk alternative, but the texture and richness may change.
  • Fresh or frozen berries both work well; if using frozen, no need to thaw beforehand.
  • For extra flavor, consider adding a splash of vanilla extract or a pinch of nutmeg to the custard mixture.
  • Leftovers can be refrigerated for up to 3 days and reheated gently.

Keywords: Overnight French Toast, French Toast Casserole, Baked French Toast, Breakfast Casserole, Make Ahead Breakfast