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Overnight Blueberry French Toast Casserole

Overnight Blueberry French Toast Casserole

This Overnight Blueberry French Toast Casserole is the perfect blend of sweet, fruity, and comforting flavors—ideal for anyone who loves Sweet Casseroles for Breakfast and needs quick Breakfast Simple Recipes. Made in a classic 9x13 breakfast recipe style, this dish is prepared the night before so you can enjoy a stress-free morning. It works beautifully as a Breakfast Morning Casserole, a Dessert Breakfast Casserole, or even as one of the best Brunch Ideas for Parties. This recipe also fits perfectly into Breakfast Ideas Freezer planning since it freezes and reheats well. Whether you’re preparing for a holiday brunch or a cozy weekend morning, this casserole is one of the Best Breakfast Options for feeding a crowd with minimal effort.
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Prep Time 10 minutes
Cook Time 50 minutes
Chill Time: 8 hours
Total Time 9 hours
Ingredients Method Notes

Ingredients
  

  • Ingredients
  • 1 loaf brioche or French bread cut into cubes
  • 2 cups fresh or frozen blueberries
  • 8 large eggs
  • 2 cups whole milk
  • ½ cup heavy cream
  • ½ cup granulated sugar
  • 1 tablespoon vanilla extract
  • 1 teaspoon ground cinnamon
  • Pinch of salt
  • Optional: powdered sugar or maple syrup for serving

Method
 

  1. Instructions
  2. Lightly grease a 9x13 baking dish and place the cubed bread evenly inside.
  3. Sprinkle blueberries on top, spreading them evenly throughout the dish.
  4. In a large bowl, whisk together eggs, milk, heavy cream, sugar, vanilla, cinnamon, and salt.
  5. Pour the custard mixture over the bread, pressing gently to help the bread absorb the liquid.
  6. Cover the dish with foil or plastic wrap and refrigerate overnight (or at least 4 hours).
  7. In the morning, preheat the oven to 350°F (175°C).
  8. Bake uncovered for 45–55 minutes, or until the top is golden and the center is set.
  9. Serve warm with powdered sugar or maple syrup if desired.

Notes

 
 
Use slightly stale bread for the best texture.
Frozen blueberries work perfectly—no need to thaw.
Add nuts or streusel for a crunchy topping.
Prep up to 24 hours ahead for busy mornings.
Perfect for freezer meal prep—assemble, freeze, thaw, bake.
Add lemon zest or cream cheese for extra flavor.