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Overnight Brioche French Toast Casserole

A rich and creamy casserole made with brioche bread soaked in custard, perfect for breakfast or brunch. Prepare the night before for an easy morning treat.
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Prep Time 10 minutes
Cook Time 30 minutes
Total Time 12 hours
Servings: 8 servings
Course: Breakfast, Brunch
Cuisine: American
Calories: 300
Ingredients Method Notes

Ingredients
  

For the Casserole
  • 1 loaf brioche bread, stale Stale bread is best for optimal soaking.
  • 1 ⅔ cups oat milk or unsweetened almond milk Adds creaminess and depth.
  • 6 large eggs Provides structure and richness to the custard.
  • ¼ cup pure maple syrup Offers natural sweetness.
  • 1 Tbsp vanilla extract Enhances the flavor profile.
  • 1 tsp ground cinnamon Adds aromatic warmth.
  • ⅓ cup all-purpose flour Helps to thicken the custard.
  • ⅓ cup coconut sugar Provides a rich, caramel-like sweetness.
  • ½ tsp ground cinnamon For an extra touch of spice.
  • 5 Tbsp cold unsalted butter Adds richness and helps with the topping.
Optional Toppings
  • Fresh berries For garnish and added flavor.
  • Maple syrup For drizzling.
  • Powdered sugar For dusting.

Method
 

Preparation (Night Before)
  1. Cut brioche bread into 1-inch cubes and place them in a 9x13-inch baking dish.
  2. In a large bowl, whisk together oat milk or almond milk, eggs, maple syrup, vanilla extract, ground cinnamon, all-purpose flour, and coconut sugar until smooth.
  3. Pour the custard mixture over the bread cubes, making sure all pieces are well coated.
  4. Cover the baking dish tightly with plastic wrap or foil and refrigerate overnight.
Baking (Day Of)
  1. Preheat the oven and bake the casserole at 350°F (175°C) until the top is golden brown and the custard is set.
  2. Let it cool slightly and serve warm with optional toppings.

Notes

For best results, use stale brioche for better absorption of the custard. Additionally, consider layering in fresh fruits or nuts before baking for extra flavor.