Baked Chocolate Raspberry French Toast Casserole || Overnight breakfast casserole

By Rebecca St.Clair

This chocolate raspberry French toast casserole is rich, cozy, and wonderfully indulgent, yet incredibly easy to make. Dotted with melted chocolate, bursts of tart raspberries, and a soft custardy centre, this baked French toast tastes like something you laboured over for hours… when in reality, it comes together with just a few simple steps.

French toast is a classic breakfast favourite, known for its warm spices, soft interior, and golden edges. This baked French toast casserole delivers all that familiar flavour but in an easy, make-ahead breakfast casserole that’s perfect for feeding a crowd. It’s ideal for relaxed weekends, holiday mornings, and special occasions when you want something impressive without standing at the stove.

What Is a French Toast Casserole?

A French toast casserole is similar to a breakfast strata or bread pudding. It’s made by soaking chunks of bread in a rich egg custard, then baking everything together until golden and set. This style of breakfast bake is endlessly customizable. Add fruit, chocolate, spices, or nuts to make it your own.

Because the bread absorbs the custard overnight, the result is a soft, flavourful interior with lightly crisp edges. It’s one of the easiest brunch recipes to prepare ahead of time and a guaranteed crowd-pleaser.

Make-Ahead Chocolate Raspberry French Toast Casserole

The best way to make this chocolate raspberry French toast casserole is to assemble it the night before. Simply cover it and refrigerate overnight. In the morning, all that’s left to do is pop it in the oven and enjoy a warm, hearty breakfast with almost no effort.

This make-ahead method makes it a go-to recipe for Christmas morning, Easter brunch, family gatherings, and holiday breakfasts, when you want something special without spending the entire morning in the kitchen.

Best Bread for Chocolate Raspberry French Toast Casserole

Choosing the right bread is key to a perfect French toast casserole. You want bread that’s slightly dry so it can fully absorb the egg custard without turning soggy.

Day-old or slightly stale bread is ideal, making this a great recipe for using up leftovers. Since bread is the base of this dish, experimenting with different types adds variety and flavour.

Great bread options include:

• Crusty sourdough
• French baguette
• Brioche
• Croissants
• Hot cross buns
• Cinnamon rolls

Richer breads add depth and sweetness, while crusty breads create a more classic texture.

French Toast Casserole Variations & Mix-Ins

This chocolate and raspberry version is a favourite, but French toast casserole is wonderfully versatile. Try these delicious mix-ins and alternatives:

• Apples – Finely chopped apples soften as they bake and add natural sweetness
• Blueberries – Juicy, flavourful, and beautiful once baked
• Bananas – Mash into the custard or slice fresh on top before serving
• Berry purée – Cook berries with sugar, then drizzle warm over the baked casserole
• Dried fruit – Raisins, cranberries, or chopped apricots plump up beautifully overnight

Sugar Substitutions

This recipe uses pure maple syrup to sweeten the custard, adding a rich, cozy flavour. You can also substitute honey, brown sugar, or your favourite sweetener depending on preference. Check out the handy chart below to see how to substitute in your sweetener of choice.

Can To Freeze Chocolate Raspberry French Toast Casserole?

Yes! This make-ahead breakfast casserole freezes beautifully—either baked or unbaked.

To Freeze Unbaked:

• Cover tightly with plastic wrap or transfer to an airtight container
• Freeze for up to 3 months
• Thaw just enough to transfer to a baking dish
• Bake as directed

To Freeze Baked:

• Allow to cool completely
• Wrap tightly or store in an airtight container
• Freeze for up to 3 months

Note: Baked casseroles may be slightly drier since they’re reheated.

How to Reheat French Toast Casserole

• Cover with foil to retain moisture
• Bake at 325°F (160°C) for about 20 minutes, or until heated through

How to Prevent Soggy French Toast Casserole

A soggy bottom is a common issue with French toast casserole, strata, and bread pudding—but it’s easy to avoid:

• Use dry or day-old bread for proper custard absorption
• Bake long enough so the custard fully sets
• Watch juicy add-ins—too much fruit can add excess moisture
• If needed, reduce milk slightly or add fruit on top after baking

French toast was originally created to use up stale bread, so embracing slightly dry bread is the secret to perfect texture!

How to Make Chocolate Raspberry French Toast Casserole

1. Rip or cut 12 slices (1 small loaf) dried crusty bread of choice into cubes.
2. Grease large ovenproof casserole dish and arrange the bread inside.
3. Toss in one bag of frozen raspberries (400 g) or the same amount of fresh raspberries.

4. In a medium bowl, whisk together 2 cups milk, 6 eggs, 1/2 cup cream, 1/2 cup maple syrup, and 1 teaspoon vanilla extract.

5. Pour this evenly over the bread making sure to soak all the chunks.

6. Cover and place in the refrigerator overnight, or at least 6 hours. (This will allow the bread to soak up all of the liquid.)

7. Gently stir the mixture after a few hours to make sure all the bread is soaking up the moisture.

8. In the morning, preheat the oven to 350 ºF (180 ºC).

9. Sprinkle on top 1/2 cup of chocolate chips or chocolate of choice.

10. Bake uncovered 45-50 minutes or until golden and the egg custard is set. If you see the top getting too dark, loosely place a piece of tin foil on top.

11. Remove and let stand 10 minutes.

12. (Optional) Serve with raspberry purée.

Raspberry purée

1. In a small sauce pot over medium heat, mix together 1 cup of fresh or frozen raspberries with 2 Tablespoons of sugar.
2. Cook and mash the berries together until it starts to bubble and thicken into a chunky sauce.

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