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Baked Brioche French Toast Casserole Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 4.5 from 17 reviews
  • Author: Lily
  • Prep Time: 10 minutes
  • Cook Time: 30 minutes
  • Total Time: 40 minutes
  • Yield: 10 servings
  • Category: Breakfast
  • Method: Baking
  • Cuisine: French
  • Diet: Vegetarian

Description

A delicious baked brioche French toast casserole featuring thick slices of brioche soaked in a fragrant orange-infused custard, baked until golden and topped with coarse sugar for a delightful crunch. Perfect for a comforting breakfast or brunch.


Ingredients

Scale

Bread

  • 1 brioche bread loaf (500 g), thickly sliced

Custard Mixture

  • 4 large eggs
  • 50 g light brown sugar
  • 1 zest of a large orange
  • 80 ml orange juice
  • 1 teaspoon vanilla extract
  • ½ teaspoon fine salt
  • 1½ cups milk

Topping and Preparation

  • 30 g butter
  • 12 g coarse sugar (demerara sugar)


Instructions

  1. Slice the Bread: Slice the brioche bread into 1.5 cm (0.6 inch) slices, about 12 to 14 slices. Cut each slice diagonally to make triangles.
  2. Make the Custard: In a medium bowl, whisk the eggs well. Add light brown sugar, orange zest and juice, vanilla extract, salt, and milk. Whisk until combined.
  3. Prepare the Dish: Grease a 22 x 13 cm (9×13 inch) casserole dish completely with butter, including sides. Reserve any extra butter for dolloping around the base.
  4. Soak the Bread: Submerge each triangle of brioche in the custard mixture fully, then place in the casserole dish with triangle points facing up. Pour any leftover custard over the bread.
  5. Rest: Let the soaked bread sit at room temperature for 30 minutes to absorb flavors fully.
  6. Add Topping: After resting, sprinkle coarse sugar evenly over the top of the casserole.
  7. Bake: Bake in a preheated oven at 165°C (340°F) for 30 minutes or until lightly golden and set.
  8. Rest and Serve: Remove from oven and let stand for 10 minutes before serving warm. Optionally drizzle with maple syrup for extra sweetness.

Notes

  • Use day-old or stale brioche bread for best results to prevent soggy texture.
  • Allowing the bread to soak for 30 minutes ensures maximum flavor infusion and custard absorption.
  • Serve warm straight from the oven with maple syrup for a comforting breakfast.
  • Cover leftovers with plastic wrap and refrigerate up to 5 days; reheat gently before serving.
  • This casserole freezes well; wrap securely in plastic wrap and foil, freeze up to 3 months, thaw overnight in refrigerator before baking.
  • Step-by-step images available in original blog post for visual guidance.

Nutrition

  • Serving Size: 1 slice (approx. 100 g)
  • Calories: 280 kcal
  • Sugar: 12 g
  • Sodium: 210 mg
  • Fat: 10 g
  • Saturated Fat: 6 g
  • Unsaturated Fat: 3 g
  • Trans Fat: 0 g
  • Carbohydrates: 37 g
  • Fiber: 1 g
  • Protein: 7 g
  • Cholesterol: 140 mg