Butternut Squash Challah French Toast Casserole

Looking for delicious baked French toast? This challah French toast casserole is insanely yummy and provides 10 grams of protein per serving.

Butternut squash in French toast? Yes, please! This healthier oven-baked French toast is made with challah, an egg bread that is wonderfully moist and chewy.

Read on to find out how to make this challah French toast casserole for your own friends and family. It’s an overnight French toast, meaning you’ll let it sit in the fridge overnight and then pop it into the oven once it’s ready to be baked!


You’ll need a few ingredients to make this challah French toast casserole:

Challah bread: This is the main ingredient of this baked French toast. Challah is an egg bread and is absolutely delicious. If you follow a gluten-free diet, you can substitute in gluten-free challah.

Eggs and egg whites: These help bind all the ingredients together and add protein to the breakfast.

Pureed butternut squash: I love baking with butternut squash, as it adds so many vitamins and minerals––as well as fiber.

Milk: When you let the casserole sit overnight, the challah will sop up the milk. If you follow a dairy-free diet, you can sub the milk for unsweetened almond milk.

Vanilla extract, pumpkin pie spice, cinnamon, and nutmeg: What would a baked challah French toast casserole be without lots of warming spices?

Pecans: These add crunch, as well as healthy fats, protein, and fiber.

Raisins: These add additional sweetness and cut down the use of sugar in the recipe.

Step-by-step instructions

If you love French toast, you’re not alone. But maybe you want a special version that will really wow your friends and family. This butternut squash French toast is just that.

To make this breakfast recipe, you’ll need to grease a baking dish with cooking spray. Then, you’ll slice a loaf of challah bread into one-inch pieces and place it in the baking tray in a single layer.

If you’ve never tried challah bread, it’s one of the tastiest breads out there. I grew up eating it during the Jewish holidays with my family. It’s not exactly like French bread or brioche. Because it has a base of egg, I think it’s even tastier!

Then, you’ll mix together the eggs, egg whites, butternut squash, milk, vanilla extract, brown sugar, spices, pecans, and raisins.

I love cooking with raisins because they add sop up the moisture of the liquid and they’re wonderfully chewy! If you’d like, you can substitute the milk for almond milk or coconut milk.

Next, you simply pour the mixture over the bread. You’ll leave it covered in the fridge overnight. Then, when you’re ready to bake your French toast, simply top it with more pecans, preheat the oven to 350° Fahrenheit, and bake for about 30 minutes!

You’ll find that the brown-sugar-cinnamon mixture adds a delicious sweetness to the overnight French toast. And of course, the egg-milk mixture is a must for getting that creaminess.

The butternut squash puree adds so many vitamins and minerals to the dish–as well as filling fiber. I like to use a canned butternut squash to make the recipe even easier to whip together.

This recipe is on the healthier side of things because it contains less sugar and saturated fat than many French toast recipes out there.

To me, the overnight French toast casserole is plenty sweet on its own. But if you’d like, you can drizzle it with pure maple syrup.

Recipe FAQ

Why is my French toast casserole soggy?

French toast casserole gets soggy when it has too much liquid or when it sits for too long––or both. To prevent it from getting soggy, do not use any milk or other liquid beyond what the recipe calls for and let it sit for no more than one night before baking.

Is brioche or challah better for French toast?

This is a personal decision. Both taste amazing in French toast, and both are eggy yeast breads. However, bricohe has a richer taste.

What can I do with a loaf of challah?

In addition to making this challah French toast casserole, you have so many options. You can cube the bread to make homemade croutons, or you can serve it with jam or honey.

More butternut squash recipes

To me, nothing screams fall more than butternut squash. To help you fill your quota of the seasonal find, here are more delicious recipes to try!

butternut squash French toast

Butternut Squash Challah French Toast Casserole

Looking for delicious baked French toast? This challah French toast casserole is insanely yummy and provides 10 grams of protein per serving.
Prep Time 15 mins
Cook Time 30 mins
Total Time 45 mins
Course Breakfast
Cuisine American
Servings 10
Calories 290 kcal


  • Olive oil spray
  • 1 Challah bread gluten free, if necessary
  • 5 large eggs
  • 4 large egg whites
  • cups pureed butternut squash
  • 1 cup 2% milk or unsweetened almond milk
  • 2 tsp vanilla extract
  • ¼ cup packed light brown sugar
  • 1 tsp pumpkin pie spice
  • 2 tsp cinnamon, divided
  • ¼ tsp nutmeg
  • 1 cup pecans, divided
  • cup raisins
  • cup granulated sugar


  • Spray a 9-by-13-inch ceramic or glass baking dish with olive oil spray. Slice bread into 1-inch pieces; place in baking dish.
  • In a medium bowl, beat eggs and egg whites. Mix in pureed squash, milk, vanilla extract, brown sugar, pumpkin pie spice, 1 ½ teaspoons cinnamon, and nutmeg. Crush ½ cup pecans and mix into squash mixture, along with raisins.
  • Pour mixture over bread pieces, making sure all pieces are covered.
  • Seal tightly with saran wrap and place in fridge overnight.
  • When ready to bake, preheat oven to 350° Fahrenheit.
  • Remove saran wrap; crush remaining pecans, and top evenly over mixture.
  • In a small bowl, combine granulated sugar with remaining cinnamon. Sprinkle evenly over mixture.
  • Bake for 30-35 minutes, until batter is firm. Serve with maple syrup, if desired.


Calories: 290kcalCarbohydrates: 38gProtein: 10gFat: 11gSaturated Fat: 2gCholesterol: 80mgSodium: 250mgFiber: 2gSugar: 18g
Keyword Challah, French toast
Did you make this recipe?Mention @amydgorin and tag #plantbasedwithamy
Want an overnight French toast casserole that's also one of the best butternut squash recipes? This challah French toast casserole is the best baked French toast. #frenchtoast #challah #overnight #bakedfrenchtoast #butternutsquash #squash #breakfast


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