Go Back
Overnight Brioche French Toast Casserole Recipe

Overnight Brioche French Toast Casserole Recipe

Usman Malik
This overnight brioche French toast casserole is a rich, buttery breakfast featuring soft brioche soaked in a creamy, spiced custard. It’s an easy, make-ahead dish perfect for busy mornings or special brunches. The overnight prep ensures a tender, flavorful result with a golden top.
Print Recipe Pin Recipe
Prep Time 15 minutes
Cook Time 45 minutes
Total Time 1 hour
Course Breakfast, Brunch
Cuisine American
Servings 10 Servings
Calories 370 kcal

Equipment

  • 9x13-inch baking dish
  • Large mixing bowl
  • Whisk
  • Cutting Board and Knife
  • Measuring cups and spoons

Ingredients
  

  • 1 loaf of brioche bread about 12-14 ounces, preferably day-old
  • 5 large eggs
  • 1 ½ cups whole milk
  • ½ cup heavy cream
  • ½ cup granulated sugar
  • 1 teaspoon vanilla extract
  • 1 teaspoon ground cinnamon
  • ¼ teaspoon ground nutmeg
  • ¼ teaspoon salt
  • 2 tablespoons unsalted butter melted
  • Optional: ¼ cup brown sugar for topping

Instructions
 

Step 1: Prepare the Brioche

  • Cut the brioche bread into 1-inch cubes. If it’s fresh, let it sit out for a few hours to dry slightly. This helps it soak up the custard better.

Step 2: Make the Custard

  • In a large bowl, whisk together eggs, milk, cream, and sugar. Add vanilla, cinnamon, nutmeg, and salt. Mix until smooth and fully combined.

Step 3: Assemble the Casserole

  • Place the bread cubes evenly in the greased baking dish. Pour the custard over the bread, pressing down gently. Make sure all pieces are coated.

Step 4: Chill Overnight

  • Cover the dish with plastic wrap and refrigerate overnight. Let it sit for at least 8 hours to let the flavors meld. This step is key for the best texture.

Step 5: Preheat the Oven

  • In the morning, preheat your oven to 350°F (175°C). Remove the casserole from the fridge while the oven heats up.

Step 6: Add Topping

  • Drizzle the melted butter over the top of the casserole. Sprinkle with brown sugar if using, for a caramelized finish.

Step 7: Bake It

  • Bake uncovered for 40-45 minutes until the top is golden and the center is set. It should feel firm but still soft inside.

Step 8: Cool and Serve

  • Let the casserole cool for 5-10 minutes before slicing. This helps it hold together when you serve it.

Notes

Let the brioche dry slightly for better custard absorption, and don’t skip the overnight soak for optimal flavor. Use the butter topping for a crispy finish. Check the oven early to avoid overbaking and keep the texture soft.
Keyword best overnight brioche french toast casserole, Overnight Brioche French Toast Casserole, Overnight Brioche French Toast Casserole Recipe, overnight french toast bake using brioche