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Simple & Irresistible Creamy Vanilla Blueberry Overnight French Toast Casserole


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  • Author: Michelle Davis
  • Total Time: 1 hour 5 minutes (+overnight soak)
  • Yield: 810 servings 1x

Description

A cozy and indulgent breakfast perfect for weekends or holiday mornings. This casserole combines soft, custardy bread with juicy blueberries and a rich vanilla cream, creating a dish that’s both comforting and easy to make. Prepare it the night before for a hassle-free morning treat.


Ingredients

Scale
  • 1 loaf brioche or challah bread, cut into 1-inch cubes

  • 2 cups fresh or frozen blueberries

  • 8 large eggs

  • 2 cups whole milk

  • 1 cup heavy cream

  • ½ cup granulated sugar

  • 2 tsp pure vanilla extract

  • 1 tsp ground cinnamon

  • ¼ tsp salt

  • 2 tbsp unsalted butter, melted

  • Optional toppings: powdered sugar, maple syrup, whipped cream


Instructions

  • Grease a 9×13-inch baking dish with butter or nonstick spray. Place cubed bread evenly in the dish.

  • Sprinkle blueberries over the bread cubes.

  • In a large bowl, whisk together eggs, milk, heavy cream, sugar, vanilla extract, cinnamon, and salt until smooth.

  • Pour the custard over the bread and blueberries, pressing gently to ensure all pieces are soaked.

  • Cover with plastic wrap or foil and refrigerate overnight or at least 6 hours.

  • Preheat oven to 350°F (175°C). Let casserole sit at room temperature for 15 minutes.

  • Bake uncovered for 45-50 minutes, or until the top is golden and custard is set.

  • Let cool slightly before serving. Add optional toppings like powdered sugar, maple syrup, or whipped cream.

Notes

  • Use slightly stale bread for best results.

  • For a crispier top, broil for the last 2-3 minutes.

  • Fresh or frozen blueberries both work; frozen will add extra juice.

  • Optional: sprinkle nuts or streusel on top for added texture.

  • Prep Time: 15 minutes
  • Cook Time: 50 minutes