Overnight Cinnamon French Toast Bake
A custardy brioche casserole with a crisp cinnamon-brown-sugar topping and fresh berries.
Overnight Cinnamon French Toast Bake is a custardy brioche casserole with a crisp cinnamon-brown-sugar topping and fresh berries. Assembling ahead lets the flavors settle before the oven sets the center and browns the edges.
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Ingredients
For the French Toast
- 1 loaf brioche or challah, about 14 ounces, cut into 1-inch cubes
- 8 large eggs
- 2 cups whole milk
- 1/2 cup heavy cream
- 1/2 cup packed brown sugar
- 2 teaspoons ground cinnamon
- 2 teaspoons vanilla extract
- 1/4 teaspoon nutmeg
- 1/2 teaspoon salt
For the Topping
- 1/2 cup all-purpose flour
- 1/2 cup packed brown sugar
- 1 teaspoon cinnamon
- 1/4 teaspoon salt
- 6 tablespoons cold unsalted butter, cubed
For Serving
- Fresh berries
- Powdered sugar
- Maple syrup
Substitutions
- For Overnight Cinnamon French Toast Bake, unsweetened oat or soy milk can replace dairy milk in the same quantity; choose a neutral flavor.
- Use a dairy-free baking stick in the crumb topping in place of butter.
- Use sturdy French bread in place of brioche or challah; slightly dry bread absorbs the custard best.
Instructions
Step 1: Assemble the base
Grease a 9-by-13-inch baking dish and spread the bread cubes evenly inside.
Step 2: Add the custard
Whisk eggs, milk, cream, brown sugar, cinnamon, vanilla, nutmeg, and salt. Pour over the bread and press gently so the top pieces absorb some custard.

Step 3: Refrigerate overnight
Cover and refrigerate for at least 8 hours and up to 12 hours.
Step 4: Add the topping
Heat the oven to 350°F. Mix flour, brown sugar, cinnamon, and salt; cut in the cold butter. Scatter over the casserole.

Step 5: Bake
Bake uncovered 40 to 45 minutes, until puffed, golden, and set in the center. Rest 10 minutes, then add berries, powdered sugar, and syrup.


How to Store Leftovers
Cool Overnight Cinnamon French Toast Bake, cover the dish or individual portions, and refrigerate within 2 hours for up to 4 days. Freeze portions only after they are fully cool.
How to Reheat
Warm a portion of Overnight Cinnamon French Toast Bake covered in a 325°F oven or in short microwave intervals until hot.
Ways to Serve
- Fresh berries
- Maple syrup
- Breakfast sausage
- Coffee or tea
Common Mistakes to Avoid
- Using the wrong dish size.
- Leaving fruit or mix-ins concentrated in one area.
- Baking until the center is dry.
Nutrition Information
| Nutrient | Per Serving |
|---|---|
| Calories | 510 |
| Protein | 13g |
| Carbohydrates | 66g |
| Fat | 22g |
| Sugar | 34g |
Nutrition is an estimate and can vary with brands, portion size, and substitutions.
Frequently Asked Questions
What is the clearest doneness cue for Overnight Cinnamon French Toast Bake?
Bake uncovered 40 to 45 minutes, until puffed, golden, and set in the center.
Can Overnight Cinnamon French Toast Bake be prepared ahead?
Yes. Prepare Overnight Cinnamon French Toast Bake ahead and complete its chilling, setting, or resting time; keep crisp or fresh toppings separate.
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