French Toast Casserole: The Easy Breakfast Bake That Steals Every Brunch

This is another one of those recipes that looks and tastes like you spent a lot more time on it than you actually did.

French Toast Casserole is the recipe to have in your collection when you are hosting a brunch, feeding a crowd on Christmas morning, or simply want your weekend breakfast to feel like an occasion without requiring you to stand at the stove flipping individual slices of French toast for twenty minutes. Everything goes into a 9×13 pan, the oven does all the work, and what comes out is golden brown, custardy, cinnamon-scented, and dusted with powdered sugar. It takes any brunch to the next level — and it makes your weekend breakfast significantly easier.

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Why This Recipe Works So Well for Entertaining

The beauty of a French toast bake over traditional French toast comes down to one thing: it scales effortlessly and requires no babysitting. Whether you are feeding four people or twelve, the recipe stays the same. You pour the custard over the bread, let it soak in, bake it, and serve it — no standing at the griddle, no batches, no keeping the early slices warm while the rest catches up.

It is also a recipe that can be prepped the night before. Assemble everything in the pan, cover it, and refrigerate it overnight. In the morning, pull it straight from the refrigerator, sprinkle on the cinnamon-sugar topping, and bake. This makes it particularly ideal for Christmas morning breakfast casseroles and holiday brunch gatherings where the last thing you want to do is spend the first hour of the day in the kitchen.

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Ingredients

Serves 8–10

• 1 loaf French bread, cut into cubes
• ½ cup butter, melted
• 1 cup brown sugar
• 6 eggs
• 2 cups milk
• 2 tsp vanilla
• 1 tsp cinnamon (for the custard)
• 1 tsp cinnamon (for the topping)
• 1 Tbsp brown sugar (for the topping)
• Powdered sugar for serving
• A 9×13 baking pan and a powdered sugar duster

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How to Make French Toast Casserole

Step 1: Preheat your oven to 425°F.

Step 2: In a medium bowl, whisk together the melted butter, brown sugar, eggs, milk, vanilla, and 1 tsp of cinnamon until fully combined and smooth.

Step 3: Add the cubed French bread to a buttered or cooking-sprayed 9×13 pan. Pour the custard mixture over the top and toss gently until every piece of bread is fully coated and soaking up the custard.

Step 4: Sprinkle the top evenly with the 1 Tbsp of brown sugar and remaining 1 tsp of cinnamon. This creates the golden, lightly caramelized crust on top that makes this casserole so visually beautiful when it comes out of the oven.

Step 5: Bake for 25–30 minutes until the top is golden brown and the custard is set through the center.

Step 6: Dust generously with powdered sugar and serve immediately.

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Tips for the Best French Toast Casserole

Day-old French bread is better than fresh. Slightly stale bread absorbs the custard without becoming completely soggy. If your bread is fresh, cut it into cubes the night before and leave it out on the counter uncovered for a few hours to dry out slightly. This is the same principle behind good traditional French toast — drier bread soaks better.

Make it the night before. Assemble the casserole completely, cover tightly with plastic wrap, and refrigerate overnight. The bread will absorb the custard deeply and evenly overnight, and in the morning you simply add the cinnamon-sugar topping and bake. This is the move for any holiday morning or brunch gathering.

Do not skip the brown sugar topping. The tablespoon of brown sugar and the second teaspoon of cinnamon sprinkled on top before baking are what create that golden, lightly crisp, caramelized surface on the finished casserole. It is the detail that takes this from a good breakfast bake to a great one.

Add mix-ins for variety. A cup of fresh blueberries, sliced strawberries, or a handful of raisins tucked into the bread cubes before adding the custard turns this into a fruit French toast casserole that feels even more special. A handful of chopped pecans scattered on top with the cinnamon-sugar topping adds crunch and a nutty warmth.

Serve with real maple syrup. The powdered sugar dusting is perfect on its own, but having a small pitcher of warm maple syrup on the table is always a welcome addition.

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Perfect for These Occasions

Christmas morning — This is the Christmas breakfast casserole that lets you actually be present with your family rather than at the stove. Assemble it Christmas Eve, bake it Christmas morning, and sit down at the table with everyone.

Easter brunch — Light, warm, and sweet — exactly the right tone for an Easter morning table. Serve alongside fruit salad and a mimosa.

Weekend brunch entertaining — When friends or family are staying over and you want to put something genuinely impressive on the table with minimal effort, this is the recipe. It looks and tastes like you worked much harder than you did.

Mother’s Day — Let the kids assemble this one the night before with minimal supervision and present it as their contribution to breakfast in the morning. Everyone wins.

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If You Enjoyed This Recipe, You Should Try…

Pear Dutch Baby — Our cast iron skillet Dutch Baby puffs up beautifully in the oven and looks stunning on a brunch table. It takes about 20 minutes and looks like you spent hours making it. A natural companion to this French toast casserole on a weekend brunch spread.

Instant Pot Monkey Bread — Derived from Nathan’s late mother-in-law’s original Monkey Bread recipe and made in an Instant Pot bundt pan. Pull-apart, caramel-coated, and deeply indulgent — the kids request this one constantly and it is easy to see why.

Cranberry Lemon Pound Cake — Bright, moist, and beautifully balanced with cranberry and lemon. Slice it for a brunch table alongside the French toast casserole and you have both warm and sweet covered elegantly.

The Secret Family Kolache — Nathan’s grandmother Dorothy’s passed-down pastry recipe. These take time and love but reward both generously. Worth every step for a special holiday morning.

Raspberry Moscato Punch — The perfect brunch drink alongside this casserole. Light, fruity, and ready in five minutes — it makes any brunch feel like a proper celebration.

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Happy Brunching!
— Jenna