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Unbelievable Blueberry French Toast Casserole

Unbelievable Blueberry French Toast Casserole

This Unbelievable Blueberry French Toast Casserole is a perfect make-ahead dish for holidays, family gatherings, or a special weekend breakfast. By assembling everything the night before, the bread soaks up a rich, vanilla-cinnamon custard, ensuring a decadent and flavorful result. The next morning, simply bake it for a perfectly golden, puffed-up casserole with a creamy interior and bursting blueberries.
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Prep Time 30 minutes
Cook Time 50 minutes
Total Time 1 hour 20 minutes
Servings: 8 servings
Calories: 350
Ingredients Equipment Method Notes

Ingredients
  

Ingredients
  • 1 loaf challah or brioche bread, cubed
  • 2 cups fresh blueberries
  • 6 large eggs
  • 2 cups milk
  • 1/2 cup heavy cream
  • 1/2 cup maple syrup
  • 2 teaspoons vanilla extract
  • 1 teaspoon ground cinnamon
  • 1 pinch salt
  • Powdered sugar and whipped cream (optional, for serving)

Equipment

  • 9x13-inch baking dish
  • large bowl
  • whisk
  • spatula

Method
 

Instructions
  1. Prepare the Bread and Dish: Lightly grease a 9x13-inch baking dish. Spread half of the bread cubes in an even layer across the bottom of the dish. Sprinkle half of the blueberries over the bread. Top with the remaining bread cubes and blueberries, creating a nice, even distribution.
  2. Mix the Custard: In a large bowl, whisk together the eggs until they are well-beaten and uniform. Add the milk, heavy cream, maple syrup, vanilla extract, cinnamon, and a pinch of salt. Whisk vigorously until everything is thoroughly combined and the mixture is smooth.
  3. Combine and Soak: Pour the custard mixture evenly over the bread and blueberries in the baking dish. Gently press down on the bread with a spatula to ensure all the pieces are submerged and beginning to absorb the liquid.
  4. Chill Overnight: Cover the dish tightly with plastic wrap or foil and refrigerate for at least 4 hours, but preferably overnight. This long soaking time is crucial for the best texture.
  5. Bake to Perfection: The next morning, preheat your oven to 350°F (175°C). Remove the baking dish from the refrigerator and let it sit at room temperature for about 20-30 minutes. Bake, uncovered, for 45-55 minutes, or until the top is golden brown and the center is set (a knife inserted into the center should come out clean).
  6. Rest and Serve: Let the casserole cool for about 10 minutes before slicing. Dust with powdered sugar and serve warm with a dollop of whipped cream or an extra drizzle of maple syrup.

Notes

For the best results, use day-old or stale bread like challah or brioche. The overnight soak is crucial for a creamy texture, so allow at least 4 hours. Let the dish sit at room temperature for about 30 minutes before baking to ensure it cooks evenly. You can add a crunchy streusel topping by mixing flour, brown sugar, cinnamon, and cold butter and sprinkling it on top before baking.