This Blueberry French Toast Casserole is full of juicy blueberries in every bite! Make it the night before and bake it in the morning for an easy overnight breakfast casserole.

square slice serving of blueberry french toast casserole topped with a lemon slice and blueberries

Everyone loves a warm, satisfying breakfast like French toast, but not everyone wants to wake up early or have to cook before having coffee. If you want the hearty breakfast without fussing with early morning cooking, then this Blueberry French Toast Casserole is for you. Assemble it ahead of time and all you have to do in the morning is pop it in the oven!

blueberry french toast casserole baked in a casserole pan

Blueberry French Toast Casserole Recipe

The main difference between this recipe and my Easy Baked French Toast Casserole recipe is that Blueberry French Toast Casserole is loaded with plump, juicy blueberries! You can use either fresh blueberries or frozen—either works just fine.

Blueberry French Toast Casserole is excellent for a weekend breakfast, brunch with family, or it can be frozen in individual portions so you can have a filling French toast breakfast any day of the week!

Ingredients

Bread – Brioche, challah, or any rustic-style loaf works best.
Blueberries – If you’re using frozen berries, be sure to keep them frozen until you need them for best results.
Eggs
Whole milk
Heavy cream – Heavy whipping cream is also fine.
Vanilla extract
Granulated sugar
Lemon zest
Kosher salt
Unsalted butter
Sugar in the raw

steps to make blueberry french toast casserole

How to Make Blueberry French Toast Casserole

1. Layer Bread and Berries

Spread half of the bread cubes into a greased 9×13 baking dish and top them with half of the blueberries. Repeat with the remaining bread and berries.

2. Make the Custard

In a large mixing bowl, whisk the eggs, milk, cream, sugar, vanilla, lemon zest, and salt. Pour the custard over the bread and gently push down with a spatula to ensure the bread soaks up as much of the custard as possible.

3. Rest

Refrigerate the Blueberry French Toast Casserole for at least 6 hours or, ideally, overnight.

4. Prepare and Bake

Preheat the oven to 350ºF and remove the dish from the refrigerator. Sprinkle the butter and raw sugar (if using) over the top of the French toast, then bake for 45 minutes, or until a knife inserted into the center comes out clean.

5. Serve

Dust with powdered sugar and serve with maple syrup.

square slice serving of blueberry french toast casserole on a metal spatula

How to Store and Reheat Leftover Blueberry French Toast Casserole

Leftovers can be stored in an airtight storage container or covered in the baking dish for 3 to 4 days. Reheat in the microwave or in a 350ºF oven until warmed through.

blueberry french toast casserole in a baking pan

FAQ

How do you keep French toast casserole from getting soggy?

Starting with dense, day-old bread is the best way to keep French toast casserole from being soggy.

What goes well with French toast casserole?

I recommend pairing Blueberry French Toast Casserole with something savory like bacon, sausage, or Ham and Cheese Quiche.

What can I use instead of syrup for French toast casserole?

You can dust French toast casserole with powdered sugar, then squeeze lemon juice over the sugar, or serve it with lemon curd, your favorite jam, or even caramel sauce.