Strawberry French Toast Casserole

A strawberry french toast casserole turns stale bread and fresh berries into a baked breakfast that feeds a full table without standing at the stove. The dish works because cubed bread sits in a sweet egg custard overnight, then bakes into a soft center with browned, crisp edges. You get the comfort of French toast in a format you can prep the night before and slide into the oven while coffee brews.

This version leans on real strawberries folded through the custard and laid on top so the fruit stays visible and tart against the sweet bread. It scales easily for holidays or weekend guests, and leftovers reheat better than stovetop French toast. If you like a classic skillet version, our homemade french toast walks through the single-serve method. Making this strawberry french toast casserole at home is surprisingly straightforward once you know the key steps.

Why You'll Love These Strawberry French Toast Casserole

• Prep happens the night before, so morning means oven, not cooking.
• Fresh strawberries keep their shape and add tartness to the sweet custard.
• One 9x13 dish serves eight, unlike a skillet that feeds two or three.
• Leftovers stay soft when reheated, unlike thin French toast that dries out.
• You control sweetness by adjusting maple syrup in the custard.

Ingredients You'll Need

• 1 loaf (about 450g) day-old brioche or challah, cut into 1-inch cubes
• 2 cups fresh strawberries, hulled and halved (quarter if large)
• 6 large eggs
• 2 cups whole milk
• 1/2 cup heavy cream
• 1/3 cup granulated sugar
• 3 tablespoons maple syrup
• 1 tablespoon vanilla extract
• 1 teaspoon ground cinnamon
• 1/4 teaspoon salt
• 2 tablespoons unsalted butter, melted
• 2 tablespoons coarse turbinado sugar for topping

Ingredient Substitutions

Brioche or challah: Replace with an equal weight of day-old French bread or sourdough for a chewier, less rich base. Lean breads absorb custard faster, so reduce soak time to 4 hours instead of overnight to avoid a mushy texture. The crumb will be denser and the flavor less buttery, but it holds shape well when baked.

Heavy cream: Use an equal amount of whole milk or half-and-half to lighten the custard. Without cream the bake sets a bit firmer and the top browns less, so add 1 tablespoon melted butter to the mix for some richness. Expect a slightly less silky mouthfeel but a cleaner dairy taste.

Maple syrup: Swap for an equal volume of honey or agave if you want a different sweet note. Honey browns faster in the oven, so check the dish at 25 minutes and tent with foil if the top darkens too quickly. The flavor reads floral rather than woodsy.

Fresh strawberries: Use 2 cups frozen strawberries, thawed and drained, when out of season. Frozen fruit releases more water, so pat dry and add 1 tablespoon cornstarch to the berries to keep the custard from thinning. The baked color will be deeper pink but the tartness stays.

Whole milk: Replace with unsweetened almond or oat milk for a dairy-free base. Plant milks lack the proteins that help the custard set, so add 1 tablespoon cornstarch per cup and expect a softer, more spoonable result rather than a sliceable one. For more ideas see our high protein casserole options.

Step-by-Step Instructions

1. Butter a 9x13-inch baking dish with 1 tablespoon of the melted butter. Spread half the bread cubes across the bottom in an even layer.
2. Scatter 1 cup of the halved strawberries over the bread. Top with the remaining bread cubes and the rest of the berries pressed slightly into the gaps.
3. In a large bowl whisk the 6 eggs, whole milk, heavy cream, granulated sugar, maple syrup, vanilla, cinnamon, and salt until fully combined and slightly frothy.
4. Pour the custard slowly over the bread, pressing cubes down so all pieces get wet. Cover with plastic wrap and refrigerate 8 hours or overnight.
5. Heat the oven to 180°C / 350°F. Uncover the dish and brush the top with the remaining melted butter.
6. Sprinkle turbinado sugar across the surface. Bake 45–50 minutes until the center is just set and the top is golden and crispy.
7. Rest the dish on a rack for 10 minutes before slicing so the custard firms. Serve warm with extra berries if you like.

Pro Tips

Dry bread is non-negotiable; if your loaf is fresh, cube it and leave it out 4 hours uncovered so the custard soaks in instead of turning to paste. For a deeper read on custard technique, see custard science from Serious Eats.

A shallow dish bakes more evenly than a deep one, so a 9x13 pan beats a tall casserole pot for this strawberry french toast casserole. If you only have a smaller pan, split the mix and watch the time.

Add the turbinado sugar in the last 15 minutes of bake if your oven runs hot, which keeps the top from burning before the center sets. You can also broil 2 minutes at the end for extra crunch.

Strain the custard through a fine sieve if you see bits of unmixed egg white, which prevents rubbery spots in the finished bake. A smooth pour gives a uniform soft crumb.

Common Mistakes to Avoid

Using soft fresh bread without drying leads to a soggy bottom layer that never sets. Always start with day-old or air-dried cubes so the structure holds through the bake.

Skipping the overnight rest means the custard sits on top instead of absorbing, giving you wet bread with a puddle underneath. Plan for at least 8 hours of chill time.

Opening the oven before 35 minutes drops the temperature and can collapse the rise, leaving a dense middle. Check through the window and only test at the end.

Pouring custard too fast floods one side and leaves the other dry, so ladle slowly and press cubes down as you go for even soak. A spoon works better than a jug here. If you enjoyed this, our french roast is worth trying next.

Serving Suggestions

Cut the bake into squares and plate with a spoon of strawberry sauce for a brighter finish. The extra fruit syrup fills any dry corners from the edges.

Pair with crisp bacon or sausages to balance the sweet custard with salt and fat. A side of strawberry salad keeps the berry theme without more sugar.

Dust with powdered sugar and add a dollop of whipped cream if serving for dessert rather than breakfast. A strawberry mojito on the side fits a brunch crowd.

Storage and Reheating

Cool the dish to room temperature within 2 hours, then cover and refrigerate up to 4 days in an airtight container. The custard keeps safely because the eggs are fully baked.

Reheat single portions in a 175°C / 350°F oven for 12–15 minutes until steaming at the center. Microwave works at 50% power for 90 seconds but softens the crisp top.

Freeze sliced portions wrapped tight for up to 2 months. Thaw overnight in the fridge, then reheat as above. Yes, this strawberry french toast casserole freezes well for up to 2 months.

Recipe Variations

Berry Mix Version

Replace half the strawberries with blueberries and raspberries for a mixed-berry bake. Berries vary in water content, so fold gently to avoid crushing and add 1 tablespoon cornstarch if using mostly raspberries. The result is tart and colorful with a softer top.

Cream Cheese Swirl

Dot 4 ounces of softened cream cheese across the bread before the custard for pockets of tang. The cheese melts into ribbons and slows browning slightly, so add 5 minutes to the bake. Expect a richer, denser bite in the middle.

Nutty Crunch Top

Add 1/2 cup chopped pecans with the turbinado sugar for a toasted nut layer. Pecans brown fast, so lay them on at 30 minutes into the bake to avoid burning. The crunch contrasts the soft custard well.

Overnight Oats Style

Swap the bread for 3 cups rolled oats mixed into the custard for a baked oatmeal format. Oats need less liquid, so cut milk by 1/2 cup and bake 35 minutes. You get a spoonable, gluten-free friendly dish that still reads as strawberry french toast casserole in flavor.