This baked Brioche French Toast Casserole is rich, comforting, and perfect for feeding a crowd. With simple pantry ingredients, it takes only a few minutes to prep and delivers a decadent breakfast or brunch—ideal for lazy weekends, holiday mornings, or when guests arrive.
This casserole uses buttery brioche cubes soaked in a sweet egg custard then baked until golden and slightly puffed. The texture is tender inside with lightly crisp edges. Serve it warm topped with powdered sugar, maple syrup and a generous handful of fresh berries for a beautiful, crowd-pleasing breakfast.
One of the best features of this dish is how easily it can be made ahead. Assemble the casserole the night before, refrigerate, and pop it in the oven in the morning—no standing over a hot griddle flipping slices. It’s a lifesaver on busy holiday mornings and makes entertaining effortless.
Why You’ll Love This Recipe:
- Fast prep: Ready in about 5–10 minutes, then bake—no fiddly stove-top work.
- Make-ahead friendly: Assemble ahead and refrigerate overnight; bake when you’re ready.
- Feeds a crowd: A large casserole serves 8–12 people, great for brunch gatherings.
- Comforting flavors: Brown sugar, cinnamon and nutmeg combine with rich cream and buttery brioche for a deliciously indulgent dish.
Ingredient Notes
- Brioche bread – Day-old or slightly stale brioche soaks up the custard without turning mushy. Challah is an excellent substitute.
- Eggs – Large eggs create a silky custard.
- Heavy cream – Use heavy cream for richness; half-and-half works if you want something lighter.
- Milk – Whole milk gives the best texture, but 2% is fine.
- Brown sugar – Adds caramel notes; swap for white sugar if needed.
- Spices – Ground cinnamon and a pinch of nutmeg for warm flavor.
- Vanilla extract – Enhances sweetness and aroma.
How to Make French Toast Casserole With Brioche
Scroll below for the printable recipe card and exact measurements.
STEP ONE: Preheat the oven to 350°F and lightly butter a casserole dish.
STEP TWO: Cut the brioche into roughly 1.5-inch cubes so pieces are uniform and soak evenly.
STEP THREE: In a large bowl, beat the eggs and stir in the brown sugar until mostly dissolved.
STEP FOUR: Add the heavy cream, milk, vanilla, cinnamon, nutmeg and a pinch of salt to the eggs and whisk until combined.
STEP FIVE: Arrange the brioche cubes in the prepared dish and pour the custard evenly over the bread.
STEP SIX: Press the bread gently so each piece soaks up the custard. If making ahead, cover and refrigerate overnight or for several hours before baking.
STEP SEVEN: Bake at 350°F for about 40 minutes, until golden and a toothpick inserted near the center comes out clean. Let rest 5–10 minutes before cutting. Serve with powdered sugar, maple syrup and fresh berries.
Recipe Tips
- Make ahead: Soak overnight for deeper flavor and easier morning prep.
- Use half-and-half or extra cream for a richer custard.
- Sprinkle cinnamon sugar over the top before baking for extra caramelized sweetness.
- Add fresh blueberries or other berries into the casserole for color and bursts of flavor.
- Keep syrup and whipped toppings for serving so the casserole stays crisp and fresh.
Serving Brioche French Toast Casserole
Serve warm with a dusting of powdered sugar, real maple syrup and a mixture of fresh berries. For an extra indulgent touch, offer whipped cream or whipped Greek yogurt. A sprinkle of toasted nuts—slivered almonds, chopped walnuts, or pecans—adds pleasant crunch.
This sweet casserole pairs nicely with savory sides such as breakfast sausages or crispy bacon for a balanced brunch spread.
Storing and Reheating
Store: Keep leftovers refrigerated in an airtight container for 3–4 days.
Reheat: Reheat a portion in a preheated oven until warmed through to preserve texture. Individual servings can be microwaved for convenience.
Frequently Asked Questions
Brioche is ideal because of its buttery, slightly sweet crumb. Challah is a close substitute. You can use regular sandwich bread or sourdough, but consider increasing the sugar slightly if using a less sweet loaf.
The interior should be tender but not soupy. If the casserole seems too wet after the recommended baking time, return it to the oven for a few more minutes until set.
More Recipes You’ll Love:
- Air Fryer Banana Bread
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- Baked Blueberry Oats
- Air Fryer Blueberry Scones
- Banana Oat Muffins
DID YOU MAKE IT? Please leave a comment and rating to let us know how you liked this recipe!
Recipe
Brioche French Toast Casserole
Pin Recipe
Equipment
- Casserole dish
- Mixing bowl
Ingredients
- 1 loaf brioche bread
- 6 eggs
- 1 cup milk
- ½ cup heavy cream
- ½ cup brown sugar
- 2 tsp vanilla extract
- 1 tsp cinnamon
- ¼ tsp nutmeg
- ¼ tsp salt
- 1 tbsp butter
To serve
- powdered sugar
- maple syrup
- blueberries, raspberries, strawberries
Instructions
-
Preheat oven to 350°F and butter the casserole dish. Cut brioche into 1.5-inch cubes.
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Beat eggs and brown sugar together. Add cream, milk, vanilla, spices and salt; whisk until combined.
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Place bread cubes in the dish and pour custard over them. Press to ensure all pieces are soaked. Cover and refrigerate if prepping ahead.
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Bake at 350°F for about 40 minutes, until set and golden. Let rest 5–10 minutes, then serve with powdered sugar, maple syrup and berries.
Notes
Store – Refrigerate leftovers in an airtight container for 3–4 days.
Reheat – Warm in a preheated oven to retain texture; microwave individual portions if desired.