Overhead shot of one/fourth of a blueberry French toast casserole, with a serving removed, and a wooden spoon inside it.
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5 from 10 votes

Blueberry French Toast Casserole

Blueberry French Toast Casserole is a perfect make-ahead dish for any holiday, family and friend gathering, or low-key lazy weekend brunch. Crusty bread PLUS blueberries get soaked in an egg custard, and then topped with a delicious buttery crumble. Leftovers are delish as well!
Prep Time15 mins
Cook Time40 mins
Total Time55 mins
Course: Breakfast
Cuisine: American
Keyword: blueberry french toast casserole, make ahead french toast
Servings: 12 servings
Calories: 420kcal
Author: Sue Ringsdorf


For the casserole:

  • 14 cups crusty French bread or sourdough bread - cut into cubes
  • 1 1/2 cup fresh or frozen blueberries
  • 10 large eggs
  • 2 cups half and half
  • 1 cup 1% milk
  • 1 Tablespoon vanilla
  • 2/3 cup brown sugar
  • 2 teaspoons cinnamon
  • 1 teaspoon nutmeg

For the topping:

  • 1/2 cup all-purpose flour
  • 1/2 cup brown sugar
  • 2 teaspoons cinnamon
  • 1/2 teaspoon kosher salt
  • 1/2 cup unsalted butter - cubed

To serve:

  • powdered sugar dusting
  • pat of butter
  • warm maple or blueberry syrup


For the casserole:

  • Grease a 9x13 casserole dish.
  • Cube the crusty bread, and place in casserole dish. Sprinkle the blueberries on top of the bread. Set aside.
  • In a large mixing bowl, whisk the eggs, half and half, milk, vanilla, brown sugar, cinnamon, and nutmeg. Pour evenly over the the bread and blueberries.
  • If making this casserole the day before, cover the casserole dish tightly with Saran Wrap. Place in refrigerate overnight.

For the topping:

  • In a medium bowl, mix together the flour, brown sugar, cinnamon and salt. Add the cubed butter and use a pastry cutter (or your fingers) to combine, pressing until the mixture is crumbled.
  • If making this casserole the day before, place mixture in a resealable plastic bag in your refrigerator overnight. (Continue with the following step in the morning.)
  • Pour topping mixture evenly over the casserole right before baking. Bake at 350 degrees for approximately 35-40 minutes.
  • Serve French toast casserole with a dusting of powdered sugar, a pat of butter, and some warm syrup. Enjoy!


Calories: 420kcal | Carbohydrates: 52g | Protein: 12g | Fat: 17g | Saturated Fat: 9g | Cholesterol: 212mg | Sodium: 388mg | Potassium: 243mg | Fiber: 1g | Sugar: 25g | Vitamin A: 685IU | Vitamin C: 2.2mg | Calcium: 138mg | Iron: 2.7mg