French Toast Casserole

French Toast Casserole is the ultimate cozy breakfast that feels indulgent yet is incredibly simple to prepare. Instead of cooking slice by slice, this baked version allows everything to come together in one dish. As a result, it’s perfect for relaxed mornings, holidays, or effortless entertaining.

What truly makes this French Toast Casserole stand out is the contrast in texture. The inside stays soft and custardy, while the top bakes into a golden, slightly crisp layer. Moreover, using rich breads like brioche enhances both flavor and structure.

Interestingly, French toast has roots going back centuries, originally created as a practical way to use stale bread. Over time, it evolved into a beloved comfort food across cultures. This casserole version keeps that tradition alive, while making it even more convenient.

Whether served fresh or reheated, this dish delivers warmth, flavor, and ease in every bite.

Recipe Yield: 6–8 servings

INGREDIENTS

1 loaf brioche or challah bread, cut into 1-inch cubes (about 10–12 cup)
5 large eggs
1 3/4 cup whole milk
1/2 cup heavy cream
1/2 cup brown sugar, packed
1/4 cup granulated sugar
2 tsp vanilla extract
1 1/2 tsp ground cinnamon
1/4 tsp ground nutmeg
1/2 tsp salt
4 tbsp unsalted butter, melted

Cinnamon Crumble Topping:
1/2 cup all-purpose flour
1/3 cup brown sugar
1 tsp cinnamon
1/4 tsp salt
5 tbsp cold unsalted butter, cubed

For Serving (optional):
Powdered sugar
Maple syrup

INSTRUCTIONS

1. Prepare the bread:
Cut the bread into cubes, then spread them on a tray and let them dry out for 20–30 minutes. This step improves absorption and prevents a soggy casserole.

2. Make the custard:
In a large bowl, whisk eggs, milk, cream, brown sugar, granulated sugar, vanilla, cinnamon, nutmeg, and salt until completely smooth and fully combined.

3. Assemble the casserole:
Lightly grease a 9×13-inch baking dish, then add the bread cubes evenly. Pour the custard slowly over the top, making sure all pieces are coated. Gently press the bread down so it fully absorbs the liquid.

4. Rest for best results:
Cover and refrigerate for at least 2 hours, although overnight is ideal. This step ensures even soaking and a soft, custardy center.

5. Prepare the crumble topping:
In a bowl, mix flour, brown sugar, cinnamon, and salt. Then cut in cold butter using your fingers or a fork until a chunky, slightly clumpy crumble forms.

6. Bake to perfection:
Preheat oven to 350°F (175°C). Sprinkle the crumble evenly over the casserole. Bake uncovered for 40–50 minutes, until the top is golden brown and the center is set (a knife inserted should come out mostly clean, or internal temp ~170°F).

7. Finish and serve:
Let rest for 10–15 minutes so it sets properly. Then dust with powdered sugar and drizzle with maple syrup before serving.

Helpful Tips to Perfect This Recipe

• Use sturdy, enriched bread: Brioche or challah creates the best structure and flavor, while slightly drying it beforehand helps absorb the custard evenly without collapsing.
• Let it soak properly: Although it may seem optional, chilling allows the custard to fully penetrate every piece, which results in a consistent, creamy interior.
• Watch the bake carefully: The casserole should be set in the center yet still soft. Even though it continues to firm as it rests, overbaking can dry it out, so pull it at the right moment.