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Overnight French Toast Casserole

This easy overnight French toast casserole can be prepped the night before and baked in the morning. Topped with a brown sugar streusel and berries, it’s perfect for the holidays or weekend brunches!

More make ahead breakfast recipes I love to serve include this cinnamon roll casserole, overnight breakfast casserole and overnight oats!

French toast casserole in a white baking dish.
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Baked French Toast Casserole

I love French toast and French bread French toast, but this overnight French toast casserole version is my go-to when serving a crowd. You can easily make it in advance and then bake it in the morning.

While my kids love these French toast sticks and eggnog French toast is a holiday favorite, this berry French toast casserole is the best Christmas breakfast idea when you want to just put something in the oven and enjoy family time.

French Toast Casserole Recipe Ingredients

This easy French toast casserole comes together with a few simple ingredients!

Sliced french bread on cutting board.

Find the full printable recipe with specific measurements below.

  • French bread: Go with a crispy outside and soft inside kind of bread. Add about 10 cups of sliced-up bread to the casserole dish.
  • Milk: The heavier the milk the creamier it will be. I used whole milk for this recipe.
  • Eggs: Large eggs are best! If you are using medium, double or add an extra egg just to be sure.
  • Brown sugar: Pack in the brown sugar. I used light brown sugar for a sweet taste but not overbearing of the berries.
  • Ground cinnamon: Always a classic spice to add to french toast.
  • Butter: This will help combine and moisten the bread.
  • All-purpose flour: Thicken the mixture to help add substance and help make it crumbly for the topping.
  • Berries: Frozen works great for this recipe!


There are many ways to make this overnight French toast your own!

  • Bread: Sourdough or challah can be used as well as you can make brioche French toast, too. Save the croissants for this breakfast croissant casserole.
  • Berries: Swap the berries for sliced apples or peaches, or omit the fruit altogether and mix in some chopped walnuts or pecans.
  • Warm spices: You can also add some vanilla extract or nutmeg to the egg mixture to give it an extra boost of flavor.

How to Make Overnight French Toast Casserole

Get ready for an easy overnight french toast that is assembled and put together in a matter of minutes.

The process of making french toast casserole in a four step photo collage.
  1. Slice bread. This recipe starts with a French bread base. Slice the bread into cubes and add it to your baking dish.
  2. Assemble. Then whisk together the milk, eggs, brown sugar, and cinnamon and pour the egg mixture on top. This will sit overnight and soak up nicely into the bread.
  3. Top. Then you’ll add a brown sugar crumble topping and berries to the top of the bread right before baking. I love using frozen mixed berries because we always have them on hand in the freezer. They give it the perfect sweet flavor!
  4. Bake. I love to cook my casserole the full hour so that the top of the bread becomes a little caramelized/toasted and the center is cooked through. If you’d like the center more of a bread pudding texture, I would take it out about 15 minutes sooner. Either way, it’s delicious!

Helpful Tips

French toast bake is simple to make but does have a few key tips that will help make it even better! Choose your bread wisely, make sure to soak it for enough time, and have a good balance of ingredients. All these tips can help make your french toast casserole perfect in every way!

  • Bread. I like to use thick, day-old French bread or French baguette so that it doesn’t become soggy. Sourdough, brioche, or challah bread work great also.
  • Soaking. The bread cubes need to soak in the milk mixture for at least 3 hours. But you’ll get the most flavor if you let it soak overnight. Make sure to pour the milk mixture evenly over the bread so that it covers each piece.
  • Consistency. Cook for 1 hour for a crispy and caramelized texture. If you prefer it softer and gooier, cook for 45 minutes.
Overnight french toast casserole in a baking dish.

Toppings for Serving

Although this casserole tastes delicious as-is, you can also add a few extra toppings to take it up a notch. Any of the below would taste amazing:

5 star review

“I have made this several times. I actually put the topping on the same day and then refrigerate the night before. I add tons of blackberries, strawberries, blueberries on top. It’s great for entertaining a brunch. I made several for about 16 and it was a hit. The recipe was actually repeated by several of the ladies at their functions. It’s so delicious. I actually served it with whip cream. Enjoy!!!!”

– Grace
Overnight french toast casserole with a wooden spoon.

Recipe FAQs

Why is my overnight French toast soggy?

Bread is the key ingredient to making the best french toast casserole dish. Usually, if your toast is soggy it is because the bread is too thin, fresh, or flimsy slice of bread. You can also add in too much milk which soaks the bread too much leaving it soggy.

What to serve with overnight french toast?

The basics are always there like bacon, sausage, scrambled eggs, yogurt bowl, and more fresh fruit. This overnight french toast casserole is best alone but you can add sides to help provide more food.

How do you keep toast crispy overnight?

If you are wanting to dry your bread, place it on a rack. This will help the air circulate all around the bread to let it “breathe”.

How to store leftovers?

This will sit in the refrigerator for two to three days long. Once it is baked you can reheat it for up to one week. Place in the microwave or oven to reheat.

Are you looking for more breakfast favorites? Try buttermilk pancakes or Belgian waffles!

More Breakfast Favorites

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French toast casserole in a white baking dish.

Overnight French Toast

4.99 from 73 votes
↑ Click stars to rate now!
Author: Jamielyn Nye
Overnight french toast casserole topped with a brown sugar crumble and berries. A delicious spin on the classic and perfect for holiday gatherings or Sunday brunch!
Prep Time: 15 minutes
Cook Time: 1 hour
Chill: 3 hours
Total Time: 4 hours 15 minutes
Servings: 10



French Toast

  • 1 loaf day-old French bread , cubed (about 10 cups) (sour dough or challah work great too)
  • 2 cups whole milk
  • 7 large eggs
  • ¾ cup light brown sugar , packed
  • ¾ teaspoon ground cinnamon
  • Pinch Kosher salt


  • ½ cup salted butter , cubed
  • ½ cup all-purpose flour
  • ½ cup light brown sugar , packed
  • 1 cup berries (I used frozen)


French Toast

  • Butter or grease a 9×13-inch casserole dish.
  • Layer the bread cubes evenly in the pan, equaling about 2 layers. In a medium bowl, beat the milk, eggs, brown sugar, cinnamon, and salt.
  • Pour evenly over the bread, making sure to coat each piece. Cover with aluminum foil and chill at least 3 hours or up to overnight.


  • In a medium bowl, mix together the butter, flour, and brown sugar with a pastry cutter or two knives. Use your hands if needed to make crumbs. Cover and chill.
  • When ready to bake, preheat the oven to 350°F. Sprinkle the topping over the bread and evenly disperse the berries on top. Bake uncovered 50 to 60 minutes, or until the top is lightly browned and the center is cooked through.
  • Enjoy by itself or topped with syrup.


Variations: Swap the berries for sliced apples or peaches, or omit the fruit altogether and mix in some chopped walnuts or pecans. You can also add some vanilla extract or nutmeg to the egg mixture to give it an extra boost of flavor.
Storage: Leftovers will last in an airtight container in the refrigerator up to 3 days. 


Calories: 405kcal | Carbohydrates: 57g | Protein: 11g | Fat: 15g | Saturated Fat: 8g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 4g | Trans Fat: 0.4g | Cholesterol: 160mg | Sodium: 390mg | Potassium: 223mg | Fiber: 2g | Sugar: 32g | Vitamin A: 559IU | Vitamin C: 0.4mg | Calcium: 130mg | Iron: 3mg

Nutrition provided is an estimate. It will vary based on specific ingredients used.

Course: Breakfast
Cuisine: American

Did you make this recipe? Don’t forget to give it a star rating below!

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