Name: Overnight French Toast Casserole Recipe
Prep time: 10 min
Cook time: 50 min
Total time: 1 h
Cuisine: American
Ingredients: 2 cups whole milk; 1 cup heavy cream; 6 large eggs; 1/2 cup granulated sugar; 1 tablespoon vanilla extract; 1 1/2 teaspoons ground cinnamon; 1/4 teaspoon salt; 1 loaf brioche bread, sliced thick; 2 tablespoons butter, melted; Maple syrup or powdered sugar, for serving

Golden, custardy, and kissed with sweet buttery bliss, this Overnight French Toast Casserole is what cozy weekend mornings are made for. Imagine thick slices of brioche soaking up a luscious egg custard overnight, then baked until puffed and golden with just the right amount of crisp on the edges. Topped with a drizzle of maple syrup or a dollop of fruit preserves, it’s equal parts comfort and elegance.

Perfect for holidays, brunches, or a lazy Sunday, this make-ahead breakfast saves time without sacrificing flavor. You’ll wake up to a dish that’s ready to pop in the oven, letting you enjoy your coffee while your kitchen fills with the scent of vanilla, cinnamon, and buttery bread. It’s the kind of morning treat that invites everyone to linger a little longer at the table.

What Kind of Bread Should I Use for French Toast Casserole?

Brioche or challah bread works best because they’re rich, slightly sweet, and soak up custard beautifully without falling apart. Day-old bread is ideal, as it absorbs the custard mixture more effectively, giving you that perfect texture—soft and creamy inside, crisp and golden on top.

Ingredients for the Overnight French Toast Casserole

Brioche Bread
The foundation of the dish, brioche adds richness and a tender crumb that elevates this casserole beyond ordinary toast.

Eggs
Eggs bind everything together and create that luxurious, custardy texture when baked.

Whole Milk & Heavy Cream
This duo gives the custard body and creaminess. The whole milk keeps it balanced, while the heavy cream adds indulgence.

Granulated Sugar
Adds sweetness to the custard and helps create a caramelized crust on top.

Vanilla Extract
Brings warmth and depth to the flavor profile.

Ground Cinnamon
Essential for that cozy, nostalgic flavor. It gives the casserole its classic French toast vibe.

Salt
Just a pinch enhances all the other flavors without making it salty.

Butter
Melted butter adds richness and gives a golden, slightly crispy finish to the top.

Maple Syrup or Powdered Sugar (for serving)
Adds the perfect finishing touch. Choose your favorite!

How To Make the Overnight French Toast Casserole

Step 1: Prepare the Bread

Cut a loaf of brioche bread into thick slices, about 1.5 inches each. Lay them in a greased baking dish, overlapping slightly if needed. Let them sit out while you make the custard.

Step 2: Whisk the Custard

In a large bowl, whisk together eggs, whole milk, heavy cream, sugar, vanilla extract, cinnamon, and a pinch of salt until completely smooth and well-combined.

Step 3: Pour and Soak

Pour the custard mixture evenly over the bread slices. Press the slices gently with a spatula to ensure they soak up the mixture. Cover tightly with plastic wrap and refrigerate overnight (or at least 6 hours).

Step 4: Bake Until Golden

The next morning, preheat your oven to 350°F (175°C). Remove the casserole from the fridge and let it come to room temperature for about 15 minutes. Dot the top with small pieces of butter, then bake uncovered for 45–50 minutes, until puffed and golden brown.

Step 5: Serve and Enjoy

Let the casserole cool for 5–10 minutes before slicing. Drizzle with maple syrup, dust with powdered sugar, or add a spoonful of fruit compote for extra flair.

Serving and Storing Your Overnight French Toast Casserole

This casserole is best served warm straight out of the oven. Letting it rest for a few minutes after baking allows the custard to fully set, making it easier to slice into neat squares.

To store leftovers, transfer to an airtight container and refrigerate for up to 3 days. Reheat in the microwave or oven until warmed through. You can also freeze individual slices wrapped tightly in plastic and foil for up to 2 months. Thaw overnight in the fridge before reheating.

What to Serve With Overnight French Toast Casserole?

Fresh Berries and Whipped Cream

Adds freshness and a light, airy contrast to the richness of the casserole.

Breakfast Sausages or Bacon

The savory saltiness balances the sweet, creamy nature of the dish.

Greek Yogurt with Honey

For a protein-packed, slightly tangy side that pairs beautifully with maple-sweetened French toast.

Scrambled Eggs

A simple and satisfying protein addition that keeps the meal balanced.

Caramelized Bananas

Pan-fry banana slices in butter and brown sugar for an indulgent topping or side.

Orange Juice or Mimosas

The citrus cuts through the richness and refreshes your palate.

Toasted Nuts or Granola

Add crunch and a hint of nuttiness to contrast the soft texture of the casserole.

Want More Breakfast Ideas?

If this Overnight French Toast Casserole has you dreaming of breakfast all day long, try these delicious favorites next:

Cinnamon Roll French Toast Bites for a sweet twist on a brunch classic.
Nutella French Toast Casserole for chocolate-hazelnut lovers.
Hawaiian Roll French Toast when you want ultra-soft sweetness in every bite.
Breakfast Pizza to satisfy both sweet and savory cravings.
Blueberry Muffins with Lemon Glaze for a bakery-style side.

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And let me know in the comments how yours turned out. Did you top it with berries or go all-in on syrup? Maybe a sprinkle of toasted nuts? I’d love to hear your take on this cozy favorite.

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