This blueberry French toast casserole is everything you love about French toast in a single dish. Its sweet and savory ingredients create a soft, custardy interior and slightly crispy exterior with just the perfect amount of sweetness.

White baking dish of blueberry French toast casserole with powdered sugar sprinkled on top, fresh blueberries, fresh mint, a stripped blue tea towel and silver spatula on the side on the white background.

If you love French toast, but don’t love the effort, you’re going to love this blueberry French toast casserole recipe! It has all of the flavors and textures of classic French toast baked into a single dish, and it makes multiple servings, making it great for crowds.

It’s a great brunch idea for a family celebration, Easter weekend, or Christmas morning. Serve it with bacon, eggs, yogurt, granola, and fresh blueberries for an absolutely delicious weekend feast.

Close up of a slice of blueberry French toast casserole on a white plate with a silver fork with powdered sugar sprinkled on top and fresh blueberries on the side on a white background..

Why You’ll Love It

Saves Time – This one-pan recipe cuts down on prep and cleanup time.
Serves a Crowd – It makes 8 servings, making it perfect for a weekend brunch or holiday breakfast.
Keeps Well – It can be made ahead of time and keeps well in the fridge and freezer.

Bowl of bread cubes, jar of maple syrup, bowl of frozen blueberries, jar of ground cinnamon, bowl of eggs, jug of whole milk, and small bowl of vanilla extract on a white background.

Ingredients + Substitutions

Bread – To make the French toast and add some complex carbohydrates. I used French bread, but brioche bread, sourdough bread, or rustic Italian bread will work well.
Blueberries – To add some fruit and fiber. I used frozen berries, but fresh or frozen blueberries will work well.
Eggs – To make the egg custard mixture and add some protein.
Milk – To add some extra protein and make the custard mixture. I used cow’s milk, as it adds more protein and a richer texture, but you can use non-dairy milk, such as almond milk or oat milk, if needed.
Maple Syrup – To sweeten and serve, honey or brown sugar will also work well.
Cinnamon – To add a bit more sweetness and enhance the flavor.
Vanilla Extract – To add more flavor.
Lemon Zest – To add some brightness, although optional.
Salt – To balance the flavors.

Dietary Adaptions

To Make it Gluten-Free: Use certified gluten-free bread.

To Make it Dairy-Free: Swap the milk for almond milk and the butter for coconut oil or avocado oil.

Grid of four images of a glass bowl of eggs, milk, maple syrup, vanilla extract, and ground cinnamon; glass bowl of whisked egg mixture; white baking dish of bread cubes; white baking dish of bread cubes with custard mixture and frozen blueberries.

Red’s Nutrition Tip

If you’re confused about bread, you’re not alone! While most people have heard that sourdough is healthy, many people remain confused about the different bread options and what ingredients to look for and, potentially, avoid. Fortunately, I’ve got a full guide on how to buy healthy bread and a breakdown of the differences between whole wheat vs. whole grain vs. multigrain bread so you can choose the bread option that works best for you.

Serving Suggestions

This blueberry French toast casserole is a good source of carbohydrates, fiber, and fat, with moderate levels of protein. To make it a more balanced meal, I suggest serving it with a side of plant or animal protein. Plus, it can easily be adapted to suit your personal dietary needs, for example:

To make it higher in protein, serve it with a generous dollop of yogurt, Greek yogurt, or Skyr on top, or a side of scrambled eggs and/or pork or turkey bacon.
To make it lower in fat, use 0% milk or almond milk instead.
To make it extra sweet, top it with a cream cheese icing, with whipped cream, powdered sugar, and/or homemade blueberry sauce or jam.

Can I prep it ahead of time?

Yes, you can make this an overnight French toast casserole. Simply prep all of the ingredients as per instructions step #1 to #4, then cover the baking dish with plastic wrap, and refrigerate overnight for up to 12 hours. When ready to bake, remove the baking dish from the fridge, remove the plastic wrap, transfer to the oven, and bake as per step #6 outlined in the instructions.

Close up of French toast casserole with blueberries in a white baking dish with a slice missing.

Storage + Reheating

To Refrigerate: Allow the casserole to cool completely and then cover with aluminum foil or plastic wrap, or transfer it to an airtight container, and store it in the fridge for up to 5 days.

To Freeze: To freeze blueberry French toast casserole, cool completely, cover the baking dish with plastic wrap and/or aluminum foil, and then place the entire baking dish in a freezer-safe bag for up to 3 months. To freeze leftovers or individual portions, transfer them to airtight containers and store them in the freezer.

To Reheat: To reheat the French toast casserole whole, allow it to thaw completely, and then cover the baking dish with aluminum foil and warm it in the oven at 350°F for 20-25 minutes. To reheat individual portions, place a thawed portion in an oven-proof baking dish in the oven for 5-10 minutes or in the microwave in a microwave-safe dish for 1-2 minutes.

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