Overnight French Toast Casserole

Posted Mar 26, 2021, Updated Apr 14, 2025

5 from 47 votes

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The best overnight french toast casserole recipe is easy to prepare in only 10 minutes! French bread is combined with a sweet vanilla egg & milk mixture and topped with a buttery streusel topping. This baked French toast casserole is made at night and baked in the morning so it’s easy to prepare and enjoy.

overnight french toast casserole in a baking dish with a piece cut out of it

I love breakfast recipes that are prepared the night before so I can enjoy the mornings with my family without being too busy in the kitchen. This overnight French toast casserole is the perfect recipe to make for any special occasion.

I took our favorite French toast recipe and turned it into a baked French toast casserole that is out-of-this-world delicious.

In this recipe, french bread is combined with a sweet vanilla egg & milk mixture and topped with a buttery streusel topping – all prepared the night before and baked in the morning. Also, try this blueberry french toast casserole when fresh berries are in season!

Overnight French Toast Casserole in a baking dish

French Toast Casserole Recipe: Ingredients & Substitutions

overhead photo of the labeled ingredients in this overnight French Toast Casserole recipe

French bread. Choose your favorite bread, (besides French bread) are brioche, cinnamon swirl bread, and sourdough.
Whole Milk. You can use 2 % milk in place of whole milk, or you can use all half and half.
Half and half. You can replace half and half with whole milk or heavy cream.
Brown sugar. dark or light brown sugar can be used with excellent results.
Granulated sugar. You can replace the granulated sugar with brown sugar, if desired.
Salted butter. unsalted butter is a good substitute.
All-purpose flour. use unbleached, all-purpose flour for the best results.

front view of a piece of Overnight French Toast Casserole

How to Make French Toast Casserole

This baked French toast is easy to make! We will walk through how to make baked french toast step-by-step, and don’t forget to watch the video.

Make the French Toast Layer

First, make the egg mixture. Todo this, whisk together eggs, milk, half and half, brown sugar, granulated sugar, vanilla, cinnamon and sea salt in a large bowl. This is most easily achieved when the ingredients are all at room temperature.

The best overnight french toast casserole recipe is easy to prepare in only 10 minutes! French bread is combined with a sweet vanilla egg & milk mixture and topped with a buttery streusel topping. This baked French toast casserole is made at night and baked in the morning so it's easy to prepare and enjoy.

Next, evenly spread the bread cubes in a prepared baking dish, then pour the egg mixture over the bread pieces and stir to combine.

Chill Overnight

Once the bread and egg mixture are combined, cover the baking dish tightly with plastic wrap and store in the refrigerator overnight.

two photos showing how to make Overnight Baked French Toast Casserole

Make the Crumb Topping

In a medium bowl, use a fork, pastry cutter or your hands and mix together the butter, brown sugar, flour, cinnamon and sea salt until the mixture resembles coarse crumbs. Cover the bowl with plastic wrap (or use a bowl with a lid) and store in the refrigerator overnight.

two photos showing how to make overnight French Toast Casserole topping

Assemble

In the morning when you’re ready to bake, remove the French toast casserole and crumb topping mixture from the refrigerator and evenly sprinkle the streusel over the top.

Bake

Next, bake the french toast casserole until the top is lightly golden brown. The filling will bubble slightly and feel set when touched.

two photos showing overnight French Toast Casserole before and after baking

Serve

Let the casserole cool slightly and then serve it warm with a drizzle of maple syrup. We also love whipping up a batch of this cinnamon honey butter or homemade whipped cream to serve on top!

Store

Store any leftovers in an airtight container in the refrigerator for 3-5 days and reheat in the microwave or oven on warm.

syrup being poured over a serving of Overnight French Toast Casserole on a plate

Freeze

You can freeze the entire baked French toast casserole by letting it cool completely then covering it with plastic wrap and foil and putting it in the freezer for up to 1 month. Thaw it overnight in the refrigerator and then bake it loosely covered with foil according to the recipe instructions.

You can also freeze this baked french toast in individual pieces so you can pull them out one at a time to enjoy. Simply cut the cooled casserole into individual servings. Place the pieces on a baking sheet and flash-freeze until hardened. Then wrap in plastic wrap and store in a freezer-friendly, airtight container for up to 2 months.

front view of overnight French Toast Casserole in a baking dish with a piece removed

French Toast Casserole FAQs

How do you keep French toast casserole from getting soggy?

Use a hearty bread that will hold up when it soaks in the liquid in this recipe, like french bread, sourdough, etc. Also, make sure to follow the recipe exactly and your casserole shouldn’t be soggy!

What type of bread is best for French toast casserole?

I suggest the following: French bread, brioche, sourdough, a sturdy artisan bread, challah, cinnamon swirl bread, or Italian bread.

a piece of overnight French Toast Casserole on a plate with syrup

If you make and love my recipes, it would mean so much to me if you would leave a comment and rating! And don’t forget to follow along on Instagram, Pinterest, Facebook, TikTok and Youtube – be sure to tag @joyfoodsunshine and use the hashtag #joyfoodsunshine so I can see your creations!

Overnight French Toast Casserole

French Toast Casserole Recipe: Ingredients & Substitutions