Blueberry French Toast Casserole with Vanilla Glaze

Name: Blueberry French Toast Casserole with Vanilla Glaze
Prep time: 15 min
Cook time: 55 min
Total time: 1 h 10 min
Cuisine: American
Ingredients: 5 large eggs; 1 cup milk (your choice); 1/4 cup melted salted butter (DF option: Use ghee or melted coconut oil.); 1/4 cup pure maple syrup, plus more (optional) for serving; 2 teaspoons pure vanilla extract; Cooking spray; 1 (10-ounce) loaf of sourdough bread* (GF option: Use gluten-free bread.); 1 1/2 cups fresh or frozen** blueberries; 1 tablespoon milk (your choice); 1/2 teaspoon pure vanilla extract; Pinch of salt; 1/2 cup powdered sugar

4.9 /5

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By: Rachel TiemeyerPosted: 10/30/24Updated: 4/12/23

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No need to slave away over the stove flipping French toast. Serve everyone at once with this easy and DELICIOUS Blueberry French Toast Casserole. Prep this fabulous make-ahead breakfast casserole ahead and store in the fridge or freezer for busy mornings, a breakfast potluck gathering, or even Christmas Breakfast.

Vanilla glaze being drizzled on top of a blueberry baked french toast casserole.

Table of Contents

Ingredients

I love the simplicity of the ingredients. You likely have all of them in your pantry and fridge already!

For French Toast:

Stale loaf of sourdough bread (or whatever bread you have on hand)
Eggs
Milk
Butter
Maple syrup – No fake stuff!
Vanilla extract (here is how to make homemade vanilla extract!)
Fresh or frozen blueberries

For Vanilla Glaze: (optional)

Milk
Vanilla extract
Salt
Powdered sugar

How to Make Blueberry French Toast Casserole

Make the Egg Mixture

In a mixing bowl, whisk together the eggs, milk, melted butter, maple syrup, and vanilla.

Eggs and milk being whisked in a glass bowl.

Assemble & Refrigerate the Casserole

Spray an 8×8-inch casserole dish with cooking spray. Add the bread and 1 cup of the blueberries (reserve 1/2 cup). Pour the egg mixture evenly over the bread and blueberries and toss to make sure every piece of bread is moist. Spread the remaining 1/2 cup of blueberries on top. Cover and refrigerate for at least 3 hours and up to 24 hours, if not freezing.

Cubed bread pieces in a glass casserole dish ready to make blueberry french toast casserole.

Bread pieces and blueberries in a glass casserole dish to make blueberry french toast casserole.

Bread pieces and blueberries in a glass casserole dish with an egg and milk mixture poured over top to make blueberry french toast casserole.

Bake It!

Preheat the oven to 350°F, while the casserole sits on the counter to warm slightly. Bake, uncovered, for 50-60 minutes or until golden brown on top and set in the middle. (If it’s browning too much on top, tent the casserole with foil.) Let the casserole cool for about 10 minutes.

Make a Vanilla Glaze (Optional)

While the casserole cools, stir together the milk, vanilla, and salt in a small bowl. Add the powdered sugar and whisk until a thin, white glaze forms.
Use a spoon to drizzle the glaze over the casserole (you don’t have to use all of it).

Vanilla glaze being whisked in a white bowl.

A serving of blueberry french toast casserole with vanilla glaze on a plate with a fork.

Side Dish Ideas

Here are some serving suggestions for a baked french toast recipe. Serve warm alongside other brunch or breakfast favorites like…

Brown eggs on a rack inside an Instant Pot.

Instant Pot Hard Boiled Eggs

Mini egg bites in a silicone muffin pan,

Cheddar Chive Egg Bites

How to Bake Bacon in the Oven

Fruit salad in a white serving bowl with a wooden spoon.

Classic Fruit Salad

How to Freeze a French Toast Casserole

One of the beauties of this recipe is it can be made ahead of time. It’s a perfect recipe to serve to groups of people since you can assemble it the night before and just pop it in the oven the morning you want to cook it.

Freeze For Later: Assemble the recipe as directed but don’t bake it. Tightly wrap the dish in a few layers of plastic wrap or foil (or a tight-fitting lid), fill out and tape on the freezer label, and freeze.
Prepare From Frozen: Note: You will need to have the ingredients to make the Vanilla Glaze on hand. Thaw completely using one of these safe thawing methods. Bake as instructed!

Blueberry french toast casserole wrapped in foil and labeled for the freezer.

Substitutions and Variations

You can also mix this recipe up in a variety of ways. Here are some ideas:

If you want to skip the Vanilla Glaze, just serve with real maple syrup on the side instead.
Swap raspberries or chopped-up strawberries for the blueberries.
Add some toasted sliced almonds to the top for a little crunch.

FAQs

What if I don’t have stale bread?

If you don’t have stale bread on hand, preheat the oven to 350°F. Cut your favorite bread into cubes and place on a rimmed baking sheet. Bake for 10 to 15 minutes, stirring at least once, until toasted. Let the bread cool before using.

What kind of bread is best?

Brioche, French bread, Challah, and crusty sourdough are excellent choices.
Avoid soft, pre-sliced sandwich bread. It can get soggy in a casserole.

How do I store leftovers?

French toast casserole keeps well in an airtight container in the refrigerator for up to 3 days. Reheat in the microwave, or in a 325°F oven until warmed through.

More Blueberry Recipes You’ll Love

Blueberry Avocado Muffins

Blueberry Muffin Smoothie

Blueberry muffin overnights in a mason jar with a yellow bowl of blueberries in the background.

Blueberry Overnight Oats

Blueberry Baked Oatmeal

Blueberry French Toast Casserole with vanilla glaze being drizzled on it.

Rachel Tiemeyer

As co-founder of Thriving Home, Rachel dreams about creating recipes (literally) and uses her husband, her 3 kids, and even the neighbors as guinea pigs several nights a week. She believes that good food has the power to bring families and friends closer together and continues to wake up excited about her job each day, even after 10+ years!

Blueberry French Toast Casserole with Vanilla Glaze