
Blueberry French Toast Bake is that reliable brilliant dish I lean on when I want breakfast to wow a crowd with zero stress in the morning. You just layer everything up the night before let the bread soak up all that rich custard and wake up to a home that smells like a corner bakery. The plump blueberries burst throughout adding just the right sweet tang in every bite. It is special-occasion flavor but easy enough for any lazy weekend.
The first time I served this at our annual spring brunch friends kept asking for the recipe before we even finished eating. Now my nieces beg me to make it for sleepovers. It is the kind of recipe that becomes tradition.
Ingredients
- Brioche or challah bread: Provides rich flavor and the perfect fluffy-soft base. Choose a loaf that is just a bit stale because it soaks up custard better
- Fresh or frozen blueberries: Bring juicy sweetness. Plumper blueberries mean more bursts of fruit throughout
- Eggs: Are the structure of your custard. Fresh large eggs give a lush silky texture
- Whole milk and heavy cream: Together create a decadent rich custard. Look for dairy with the highest fat content you can find for luxury in every bite
- Granulated sugar: Sweetens and helps the custard set. Good-quality white sugar dissolves seamlessly
- Light brown sugar: Adds a mellow caramel note. Press to remove lumps before measuring
- Pure vanilla extract: Boosts the aroma. Go for real extract not imitation for the best perfume
- Ground cinnamon: Warms every layer. For the freshest spice buy whole sticks and grate yourself
- Sea salt: Sharpens all flavors and balances sweetness. Taste a pinch the best sea salts taste clean not metallic
- All-purpose flour: In the topping creates tender little crumbles that bake up crisp
- Unsalted butter: Is key for a rich crumbly streusel. It must be cold for the right texture
Instructions
- Prepare the Baking Dish:
- Lightly grease your 9x13-inch dish all over using butter or a swipe of nonstick spray. This prevents any sticking and also adds flavor to the finished edges
- Layer the Bread and Blueberries:
- Scatter half of your cubed brioche into the dish then evenly distribute half the blueberries on top. Repeat the layering with the remaining bread and berries so fruit is well dispersed
- Whisk the Custard:
- In a large bowl vigorously whisk eggs with milk heavy cream both sugars vanilla cinnamon and salt until everything is fully combined. Check for streaks of egg and whisk those out for even soaking
- Pour and Soak:
- Slowly pour the custard mixture over the bread and berries making sure every inch of bread gets a little. Gently press the bread down with clean hands or a spatula to help it absorb the liquid. The bread should look saturated but not floating
- Cover and Chill:
- Seal the dish snugly with plastic wrap or foil. Refrigerate overnight for at least eight hours. This rest time transforms the bread into custardy magic
- Prepare the Streusel Topping:
- In a medium bowl mix flour brown sugar cinnamon and salt. Add diced cold butter and use your fingertips to rub it in lightly until the mixture looks crumbly. Chill this topping until ready to bake so it stays crisp
- Preheat and Top:
- Take the casserole from the fridge while the oven preheats to 350 F. Sprinkle the cold crumb topping evenly all across the surface for a crunchy finish
- Bake:
- Bake uncovered for 45 to 55 minutes checking after 40 minutes. The French toast should be puffed and the topping golden. If it is browning quickly tent loosely with foil for the final stretch. It is done when the center feels set not jiggly
- Rest and Serve:
- Let the bake cool for at least ten minutes. This makes it easier to slice without falling apart. Serve warm with a dusting of powdered sugar or a gentle drizzle of maple syrup for extra delight

My favorite part is biting into the caramelized golden edges where the bread meets the dish. Those nibbles instantly remind me of childhood Sunday mornings at my grandmother's house while blueberry juice stained our fingers and everyone lingered for another helping.
Storage Tips
Keep leftovers covered in the fridge for up to three days. Reheat gently in the oven to revive the crisp topping or a quick zap in the microwave if you are in a rush. You can also freeze tightly wrapped portions for up to two months. Thaw overnight in the fridge or pop right into the oven from frozen for a lazy morning treat.
Ingredient Substitutions
If you are out of brioche use any soft slightly stale white or egg-based bread. Sourdough gives a deeper flavor twist. For a nutty variation sprinkle a handful of sliced almonds or chopped pecans into the topping mix. Dairy-free options work well if you reach for oat milk and vegan butter. Choose coconut milk for subtle tropical notes.
Serving Suggestions
Pile up warm squares with a scoop of Greek yogurt or a swirl of whipped cream. Add a scattering of fresh berries for color and brightness right before serving. For a brunch spread offer maple syrup on the side and maybe crispy bacon or sausage links for anyone craving the sweet-savory balance. I love serving it with strong coffee and tangy orange slices for contrast.
Cultural Context
These sorts of overnight breakfast bakes are a brunch tradition across America. Inspired by classic French pain perdu meaning lost bread they help revive day-old loaves. Over generations families loved them for being delicious yet practical especially when hosting groups or marking holidays.

This Blueberry French Toast Bake is the dish my family expects for every holiday breakfast. Simple to make but unforgettable in flavor and warmth.
Recipe Questions
- → Can I use frozen blueberries?
Yes, both fresh and frozen blueberries work well. There's no need to thaw frozen berries; just scatter them directly onto the bread.
- → Which bread is best for this dish?
Day-old brioche or challah provides a soft, rich base that absorbs the custard without becoming mushy. Other sturdy breads work too.
- → How do I make this dairy-free?
Substitute whole milk and heavy cream with almond or oat milk, and use vegan butter in the topping for a dairy-free breakfast.
- → Can I prep it days ahead?
It's best chilled overnight, but you can prepare up to 24 hours ahead. Add the topping just before baking for best texture.
- → What toppings pair well when serving?
A drizzle of maple syrup, sifted powdered sugar, or a spoonful of Greek yogurt all complement the sweet, custardy flavors.
- → Is this suitable for vegetarians?
Absolutely! All main ingredients are vegetarian, making it a great option for various dietary preferences.