Blueberry French Toast Casserole is an easy weekend breakfast bursting with blueberries, layered with rich maple custard infused brioche bread. Perfect for brunch or holiday mornings, this recipe turns classic French toast into a shareable baked casserole.

Baked blueberry French toast casserole in an oval gratin dish on a wooden table, with a serving spoon scooping some out .

🌿 Ingredients You'll Need

Brioche Bread Loaf cut into thick slices. Buy one at the bakery or try my recipe for Brioche Nantarre.
Whole Milk and Heavy Cream are mixed with the eggs to create the liquid custard that softens and enriches the brioche bread.
Large Eggs
Maple Syrup adds subtle maple flavor to the French toast custard. Of course you'll need a little more for serving too!
Granulated Sugar
Cinnamon and Nutmeg
Fresh Blueberries hold their shape better than frozen berries when baked in the casserole. Don't skimp at the berries, add extra for a delicious berry breakfast.
Unsalted Butter and Granulated Sugar are mixed together with flour to create a nice crunchy sweet topping.

Two hands setting a baked French toast casserole in a gratin pan onto a wire rack on a wooden table.

How To Make French Toast Casserole

French toast casserole is one of those easy, last minute, "tada" look what I made kind of recipes. No special techniques or complex seps for this one. All you need are quality ingredients and gratin or casserole dish.

Start by slicing a loaf of brioche bread into thick pieces and then into 2-inch cubes. Place the bread and fresh blueberries into a buttered casserole dish. I like to layer the berries and bread, so some of the berries create a jam at the bottom of the pan.

Mix together the custard ingredients and then pour over the bread, making sure to soak each piece of bread with the liquid. Press the bread down gently with a spatula to help absorb. Top your casserole with a mixture of sugar and spices in a buttery crumble. Then, add more blueberries of course!

Soak or rest the casserole in the fridge for a minimum of 1- hour so the bread can absorb some of the liquid custard. Bake for 45-50 minutes at 350℉ (180℃) until golden with bubbly berries. Serve warm with a drizzle of maple syrup, whip cream if you're feeling fancy, and a cup of coffee.

Overhead view of hands mixing eggs into a bowl of sugar next to a casserole dish filled with bread and blueberries.

Two hands holding an unbaked French toast casserole in a gratin pan over a wooden table.

French Toast Tips

What Baking Ingredients I Use and Why

Weigh Your Ingredients:
The recipe card includes both metric and US conversions, but since I create all my recipes with metric measurements, I can't guarantee the same results if you use a different measuring method. This is the kitchen scale I use everyday.

Use Whole Milk and Free Range Eggs:
For a delicious custard start with high quality ingredients. Whole milk creates a lovely rich casserole.

Use Fresh Blueberries:
Fresh blueberries are juicy and retain a bit of their shape when baked. Frozen berries on the other hand can have excess water from the freezer. If all you have are frozen, set them on a layer of paper towels to warm to room temperature before using. The paper towels will help absorb any of the water as they dethaw.

Overhead view of an french toast casserole with blueberries next to a serving on a plate and a cup of coffee.

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Blueberry French Toast Casserole

author: Jenn Davis

Blueberry French Toast Casserole is an easy weekend breakfast bursting with blueberries, layered with rich maple custard infused brioche bread.

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Baking Tips Print Recipe Pin Recipe

Prep Time 10

Cook Time 45

Soaking Times 30

Total Time 1 25

Servings servings

Ingredients

French Toast Casserole

1 loaf brioche bread (14 to 16-ounce loaf), cut into 2.5-inch cubes
400 grams fresh blueberries, *divided, more as needed
6 large eggs, room temperature and lightly beaten
480 grams whole milk, room temperature
120 grams heavy cream
50 grams granulated sugar
3 tablespoons maple syrup, *more for serving
½ teaspoon vanilla bean paste or pure vanilla extract
2 teaspoons ground cinnamon

Cinnamon Sugar Topping

100 grams granulated sugar
32 grams all purpose flour
1 teaspoon ground cinnamon
1 teaspoon ground nutmeg
42 grams unsalted butter, melted

Instructions

French Toast Casserole

Butter a 9x13-inch casserole dish or gratin pan.
Place brioche pieces in the baking pan, layering generously with ¾ of the total blueberries.
In a medium bowl, mix the sugar, cinnamon, vanilla, and maple syrup together. Mix in the beaten eggs.
Slowly pour in the milk and cream, mixing until well combined.
Pour or spoon the custard mixture over the bread and blueberries, making sure to coat all of the bread.

Cinnamon Sugar Topping

Stir together the sugar, flour, cinnamon and nutmeg in a small bowl. Add the melted butter and mix lightly to make a sugary crumble.
Sprinkle the crumble over the casserole and top with the remaining blueberries.

Soak the Casserole

Cover the casserole with plastic wrap and chill for at least 1 hour in the fridge. Or refrigerate overnight. This soaking step, allows the bread to absorb the custard.

Bake Blueberry French Toast

While the casserole is chilling, preheat the oven to 350℉ (180℃).
Remove casserole from the fridge, discard plastic wrap. Place the casserole on the middle rack of the oven and bake for 45-50 minutes. The bread and topping should be puffed and golden brown with a slight crunchiness on the edges. The blueberries will be juicy and bubbling.
Serve warm with a drizzle of maple syrup and a little whipped cream.

Video

course Breakfast, brunch

cuisine American

Did you make this recipe? Let me know by leaving a recipe rating below or by tagging @twocupsflour on instagram. I love seeing your fabulous creations!