French Toast Casserole Recipe With Overnight Soak: How to Make it

This French toast casserole recipe turns cubed bread, eggs, milk, and cinnamon into a soft, custard soaked breakfast bake with crisp edges. You assemble it the night before and bake it in the morning for 45 minutes at 350°F.

The casserole serves 8 and takes 55 minutes total, with 10 minutes of prep. The bread soaks overnight in the custard, so every piece absorbs the egg mixture evenly and bakes up tender without any dry spots. You can serve it straight from the oven or make it up to 24 hours ahead.

French toast casserole in a white baking dish with golden brown top and crisp edges, served with fresh berries

Why This French Toast Casserole Recipe Works

  • Overnight soaking lets the bread absorb the custard completely, so the casserole bakes evenly without soggy or dry patches.
  • Day old bread holds its shape better than fresh, and the recipe uses 1 pound of cubed bread to 6 eggs and 2 cups of milk for the right custard to bread ratio.
  • Baking uncovered at 350°F for 45 minutes gives you a golden top with crisp edges and a soft center that reaches 160°F.

French Toast Casserole Recipe

French Toast Casserole Recipe

Recipe by Soukayna
0.0 from 0 votes
Course: BreakfastCuisine: AmericanDifficulty: Easy
Servings
+
–

8

servings
Prep time

10

minutes
Cooking time

45

minutes
Calories

285

kcal

French toast casserole turns cubed day old bread into a soft, custard soaked breakfast bake with crisp edges and a golden top. The bread soaks overnight in an egg and milk mixture, then bakes at 350°F for 45 minutes to serve 8.

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Ingredients

  • 1 pound day old French bread

  • 6 large eggs

  • 2 cups whole milk

  • 1/4 cup granulated sugar

  • 2 teaspoons vanilla extract

  • 1 teaspoon ground cinnamon

  • 1/4 teaspoon salt

  • 2 tablespoons butter

Directions

  • Grease a 9×13 inch baking dish with the melted butter, coating the bottom and sides completely.
  • Arrange the bread cubes in the prepared dish in an even layer. The cubes should fill the dish without packing tightly.
  • Whisk together the eggs, milk, sugar, vanilla, cinnamon, and salt in a large bowl until the sugar dissolves and the mixture is smooth, about 1 minute.
  • Pour the custard over the bread cubes, pressing the bread down gently with a spatula so every piece is submerged. Cover the dish tightly with plastic wrap.
  • Refrigerate for at least 8 hours or overnight. The bread absorbs the custard and softens completely.
  • Remove the casserole from the refrigerator 30 minutes before baking. Let it sit at room temperature while you preheat the oven to 350°F.

Notes

  • The bread needs at least 8 hours to soak so the custard absorbs evenly and the French toast casserole bakes without dry spots or a wet center.
  • If the center stays wet after 45 minutes, return the casserole to the oven uncovered for 10 more minutes. Too much milk or skipping the overnight soak causes this.
  • The casserole keeps for 3 to 4 days in the refrigerator, covered tightly. You can use 2% milk instead of whole milk, but the texture will be slightly less creamy.

Nutrition Facts

  • Serving Size: 1 g
  • Total number of serves: 8
  • Calories: 285kcal
  • Fat: 9g
  • Carbohydrates: 38g
  • Net Carbs: 36g
  • Fiber: 2g
  • Protein: 11g
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The sections below explain which bread works best for this French toast casserole recipe, how to get the custard ratio right, and what to do if the center stays wet.

Key Ingredients and Substitutions

These ingredients control the texture and flavor of the baked casserole.

  • Day old French bread: The bread holds its shape during the overnight soak and absorbs the custard without falling apart. Challah or brioche work well, but they add more sweetness. Sandwich bread turns mushy.
  • Whole milk: Whole milk gives the custard a rich, creamy texture. You can use 2% milk, but the casserole will be slightly less tender. Skim milk makes it watery.
  • Eggs: Six eggs bind the custard and set the casserole during baking. Fewer than 6 eggs leave the center runny. More than 6 make it rubbery.
  • Cinnamon: One teaspoon of cinnamon adds warmth without overpowering the custard. You can swap it for pumpkin pie spice or leave it out for a plain version.
  • Vanilla extract: Two teaspoons of vanilla deepen the flavor. Imitation vanilla works, but pure extract tastes cleaner.

How to Get French Toast Casserole Right

These steps prevent the most common problems with this recipe.

  • Cut the bread into 1 inch cubes: Smaller pieces turn mushy, and larger pieces do not soak through. One inch cubes absorb the custard evenly and bake in 45 minutes.
  • Let the casserole sit overnight: The bread needs at least 8 hours to soak. If you skip this step, the center stays wet and the edges dry out.
  • Bring the casserole to room temperature before baking: Take it out of the refrigerator 30 minutes before the oven. A cold dish bakes unevenly and takes longer.
  • Bake uncovered: Covering the dish traps steam and makes the top soggy. The French toast casserole needs dry heat to crisp the edges and brown the top.
  • Check the internal temperature: The center should reach 160°F. If it jiggles when you shake the pan, bake it for 5 more minutes.

Make Ahead and Bake Later

Assemble the casserole up to 24 hours before baking. Cover it tightly with plastic wrap and refrigerate. Let it sit at room temperature for 30 minutes, then bake at 350°F for 45 to 50 minutes.

What Went Wrong

Why Is the Center Wet?

The casserole did not bake long enough, or you used too much milk. The center should reach 160°F. If it is still wet, return it to the oven uncovered for 10 minutes. Next time, measure the milk exactly and let the bread soak overnight so it absorbs the custard before baking.

Why Are the Edges Dry?

The oven temperature was too high, or the casserole baked too long. The edges dry out before the center sets. You cannot fix dry edges, but you can serve the casserole with syrup or whipped cream. Next time, use an oven thermometer to confirm 350°F and check the internal temperature at 40 minutes.

Why Did the Top Not Brown?

The oven was not hot enough, or you covered the dish. The top needs direct heat to brown. If the casserole is fully cooked but pale, turn the broiler on for 2 minutes and watch it closely. Next time, bake uncovered and check your oven temperature.

Ways to Change It

Stuffed French Toast Casserole

Spread 4 ounces of softened cream cheese between two layers of bread cubes before pouring the custard over. The cream cheese melts into pockets and adds richness. Bake at 350°F for 50 minutes.

Berry French Toast Casserole

Fold 1 cup of fresh or frozen blueberries into the soaked bread before baking. The berries release juice and add tartness. Frozen berries work without thawing, but they add 5 minutes to the bake time.

Streusel Topped French Toast Casserole

Mix 1/2 cup of flour, 1/2 cup of brown sugar, and 1/4 cup of cold butter into crumbs. Sprinkle the streusel over the casserole before baking. The topping crisps and adds a sweet crunch.

What to Serve With French Toast Casserole

Serve the casserole with maple syrup, fresh berries, or whipped cream. Crisp bacon or breakfast sausage balances the sweetness. A fruit salad or hash browns rounds out the meal. For a fall breakfast, try it with pumpkin French toast flavors or spiced apple compote.

How to Store and Reheat Leftovers

French toast casserole keeps for 3 to 4 days in the refrigerator, covered tightly with plastic wrap or foil. Freeze individual portions in airtight containers for up to 2 months. Thaw overnight in the refrigerator before reheating.

Reheat single servings in the microwave for 1 to 2 minutes at 50% power. For larger portions, cover the dish with foil and warm it in a 300°F oven for 15 to 20 minutes. The casserole dries out if reheated uncovered.

French Toast Casserole FAQs

Can you make French toast casserole recipe without soaking overnight?

Yes, but the texture suffers. Soak the bread for at least 2 hours at room temperature. The center may stay slightly wet, and the edges will not be as tender as with an overnight soak.

What kind of bread works best?

Day old French bread works best because it holds its shape during soaking. Challah and brioche are sweeter alternatives. Sandwich bread turns mushy and does not crisp well.

How do you know when the French toast casserole recipe is done?

The center reaches 160°F and no longer jiggles when you shake the pan. The top is golden brown and the edges pull away slightly from the dish. This takes 45 to 50 minutes at 350°F.

Can you freeze French toast casserole?

Yes. Freeze it baked or unbaked in an airtight container for up to 2 months. Thaw overnight in the refrigerator. Bake unbaked casserole at 350°F for 50 minutes. Reheat baked casserole covered at 300°F for 20 minutes.

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