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–+ servings
A delicious slice of Best Blueberry French Toast Casserole on a white plate, with a crumb topping and bursting blueberries.

Blueberry French Toast Casserole

This blueberry French toast casserole is a delicious and easy breakfast or brunch option. It uses a loaf of bread soaked in a sweet custard mixture and topped with a streusel before baking.
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Prep Time 20 minutes
Cook Time 50 minutes
Refrigeration Time 12 hours
Total Time 13 hours 10 minutes
Servings: 8 servings
Course: Breakfast, Brunch
Cuisine: American
Ingredients Equipment Method Notes

Ingredients
  

For the Casserole
  • 1 (12–14-ounce/340–400g) loaf French bread, sourdough bread, brioche, or challah
  • 1 cup fresh or frozen blueberries
  • 2 cups whole milk
  • 8 large eggs
  • 1/2 cup heavy cream
  • 1/2 cup packed light brown sugar
  • 2 teaspoons pure vanilla extract
  • 2 teaspoons ground cinnamon
  • 1 teaspoon fresh lemon zest
  • pinch salt
Streusel Topping
  • 1/3 cup packed light or dark brown sugar
  • 1/3 cup all-purpose flour spooned & leveled
  • 1/2 teaspoon ground cinnamon
  • 6 Tablespoons unsalted butter, cold and cubed
Optional Toppings
  • extra blueberries
  • maple syrup
  • confectioners’ sugar

Equipment

  • 9x13-inch baking pan
  • Medium bowl
  • Pastry blender or two forks

Method
 

  1. Grease a 9x13-inch pan. Cut the bread into 1-inch cubes. Spread the cubes in the pan and top evenly with blueberries. Set aside.
  2. Whisk together the milk, eggs, cinnamon, brown sugar, and vanilla until no brown sugar lumps remain. Pour this mixture over the bread and blueberries. Cover the pan tightly and refrigerate for at least 3 hours, or preferably overnight.
  3. Preheat your oven to 350°F (177°C). Remove the pan from the refrigerator.
  4. Prepare the topping: In a medium bowl, whisk together the brown sugar, flour, and cinnamon. Cut in the cold butter using a pastry blender or two forks until the mixture resembles coarse crumbs. Sprinkle this topping evenly over the soaked bread.
  5. Bake for 45–55 minutes, or until the top is golden-brown. For a softer casserole, bake for 45 minutes.
  6. Serve warm. Store any leftovers tightly covered in the refrigerator for 2–3 days.

Notes

You can use any sturdy bread like French bread, sourdough, brioche, or challah. For a softer texture, bake for the shorter time. Leftovers can be stored in the refrigerator for 2-3 days.

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