Brioche French Toast Casserole

Cinnamon Brioche French Toast Casserole is the perfect indulgent breakfast for any occasion. With a rich, buttery brioche bread as the base, this casserole is layered with creamy custard and topped with a crunchy cinnamon streusel.

It's a decadent twist on traditional French toast that will have everyone asking for seconds.

Jump to:

• What makes this recipe irresistible
• Ingredients you’ll need
• Creative variations to try
• Step-by-step instructions
• Essential tools for this recipe
• Frequently asked questions (FAQ’s)
• Top Tip
• How to store leftovers
• More recipes you’ll love
• Perfect pairings: what to serve with
• Brioche French Toast Casserole

What makes this recipe irresistible

This simple casserole has a sweet flavor and it's a tasty make-ahead breakfast. It's perfect for special occasions such as Christmas Day or even Mother's Day. But you don't have to wait for a holiday. You can also serve it for weekend brunch!

You only need a few basic ingredients so you don't have to worry about tracking down hard-to-find or expensive ingredients at your local grocery store. 

Ingredients you’ll need

Please refer to the printable recipe card at the bottom of this post for the exact measurements. 

• Loaf cinnamon brioche bread—You can swap it out for other options, such as sourdough or challah bread. They are both great options for this easy French toast bake. 
• butter
• large eggs
• salt
• whole milk
• pure vanilla extract
• flour
• brown sugar
• pecans
• butter, powdered sugar and/or maple syrup for serving

Creative variations to try

• If you want some add some sweet flavor sprinkle some milk chocolate or semi sweet chocolate chips on top of the casserole before you store it in the fridge. 
•  Not a fan of nuts or have an allergy? Leave them out or even swap the pecans for chopped walnuts if you prefer them. 
• Make this extra special by topping it with fresh strawberries, blackberries, or blueberries and a dollop of fresh whipped cream, yum!!

Step-by-step instructions

This is an overview of the instructions. For complete directions, scroll down to the bottom.

1. Spray a 9x13 baking dish with non-stick cooking spray.
2. Dice the bread loaf into 1-2” pieces and place in a large mixing bowl.
3. In a separate bowl, add the eggs, salt, milk, and vanilla. Whisk to combine. Add the melted butter, mix again.
4. Pour the egg mixture over the bread. Using a large spoon, mix so the bread is evenly coated.
5. Pour the bread/egg mixture into the prepared casserole dish. Cover with plastic wrap. Refrigerate preferably, overnight (or at least 2 hours).
6. The next day, preheat the oven to 350°F. Remove plastic wrap from the casserole dish.
7. In a small bowl, mix flour with brown sugar and chopped nuts. Sprinkle over the top of the casserole.
8. Bake, uncovered in the oven for 45-50 minutes.
9. Remove and allow to sit for 10 minutes. Slice and serve with butter, powdered sugar and syrup.

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Essential tools for this recipe

• 9x13 baking dish 
• large bowl
• medium bowl
• small bowl

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Frequently asked questions (FAQ’s)

• Remember to spray or grease your casserole dish with room temperature or shortening to prevent it from sticking, as this breakfast casserole can get sticky.  

How to store leftovers

Refrigerate - If you manage to have leftovers store leftovers in an airtight container in the fridge for 2-3 days.  If you don't have a lid for your casserole dish you can cover it with plastic wrap or aluminum foil to keep it fresh.

Freezer -  Want to save this dish for later? You can freeze it before or after baking. If freezing before baking, cover the casserole with foil and place in the freezer. When ready to bake, defrost overnight in the fridge and then follow the original baking instructions.

If freezing after baking, let the casserole cool completely before wrapping it tightly in plastic wrap and aluminum foil. It can be stored in the freezer for up to 3 months.

Reheat - To reheat, simply pop slices of the casserole into a microwave until warmed through. You can also reheat it in the oven at 350 degrees Fahrenheit for about 10 minutes.

More recipes you’ll love

• This Sausage Biscuit Breakfast Casserole is another easy breakfast casserole that's perfect for feeding a crowd on making on lazy mornings when you want the ultimate comfort food. 
• This Overnight Eggs Benedict Casserole is another easy brunch recipe that is great for holidays and special occasions like Christmas morning. You can't go wrong with this hearty make ahead dish. :
• Are looking for ways to up your breakfast game? Add this Easy Huevos Rancheros recipe to your next brunch. Your family and friends will be impressed with your breakfast skills after the first bite. 
• However, if you are looking for a lighter breakfast idea that still packs a ton of flavor check out this Vegetable Frittata.  It's a great way to use up any vegetables you may have on hand in the fridge. 

Perfect pairings: what to serve with

• I love to pair a decadent breakfast like this overnight French toast casserole with a side of fresh fruit such as this Mexican Fruit Salad recipe. It has a slight touch of heat which is great for balancing out the sweet and rice flavor of this delicious dish, 
• Pair these Air Fryer Fried Eggs with this overnight brioche french toast casserole for a hearty breakfast that your whole family will love. It's the perfect balance of a sweet treat and a protein source to start your day off right. 
• Looking to get a protein boost for your family alongside this perfect breakfast casserole recipe? Add a glass of this Chocolate Peanut Butter Smoothie for a smooth and creamy beverage to sip on. 

Yum, yum, yum! Isn't this a great casserole? I hope you really enjoyed