Overnight Blueberry French Toast Casserole

Share this article via:

If you love French toast but hate standing over the stove flipping slices, this Overnight Blueberry French Toast Casserole is about to become your new go-to recipe.

It’s sweet, custardy, packed with juicy blueberries, and best of all—you prep it the night before and just pop it in the oven in the morning.

Imagine buttery cubes of bread soaked in a vanilla-cinnamon custard, layered with bursts of fresh blueberries, and baked until golden brown. Topped with a dusting of powdered sugar and a drizzle of maple syrup, it’s brunch perfection with minimal effort.

Why You’ll Love This Recipe

• Make-ahead magic—just prep, refrigerate, and bake in the morning
• Perfect for brunch, holidays, or meal prep
• Loaded with juicy blueberries for a naturally sweet, fruity flavor
• Soft, custardy inside with a golden, slightly crisp top

Ingredients

• 1 loaf brioche or French bread, cut into 1-inch cubes (about 6 cups)
• 1 ½ cups fresh or frozen blueberries
• 6 large eggs
• 2 cups whole milk (or half-and-half for extra creaminess)
• ½ cup maple syrup or honey
• 1 teaspoon vanilla extract
• 1 teaspoon cinnamon
• ¼ teaspoon salt
• 2 tablespoons butter, melted
• Powdered sugar and extra maple syrup for serving

Instructions

Grease a 9×13-inch baking dish with butter and evenly spread half of the bread cubes across the bottom. Sprinkle with half of the blueberries, then layer the remaining bread and berries on top.

In a large bowl, whisk together the eggs, milk, maple syrup, vanilla, cinnamon, and salt until well combined.

Pour the custard mixture evenly over the bread, making sure every piece is soaked. Gently press down with a spatula to help the bread absorb the liquid.

Cover the dish tightly with plastic wrap and refrigerate overnight (or at least 6 hours).

In the morning, preheat the oven to 350°F. Let the casserole sit at room temperature for about 15 minutes before baking.

Drizzle the melted butter over the top and bake uncovered for 40-45 minutes, or until golden brown and the center is set.

Let it cool for 5 minutes, then dust with powdered sugar and serve warm with maple syrup.

Nutrition Information (Per Serving, based on 8 servings)

• Calories: 320
• Protein: 10g
• Carbs: 45g
• Fat: 10g

Please note: The nutritional information above is just an estimate, as calories and other values can change based on the ingredients you use when making this yummy breakfast treat. If you have special dietary requirements, please make sure to read the labels. (We’re sure you probably already know this, but it can’t hurt to say it again!).

Tips for the Best Overnight Blueberry French Toast Casserole

• For extra crispiness, bake uncovered for the last 10 minutes
• Use day-old bread—stale bread absorbs the custard better without getting soggy
• Swap the blueberries for raspberries, blackberries, or a mix of berries
• Make it dairy-free by using almond milk and skipping the butter

Conclusion

This Overnight Blueberry French Toast Casserole is the ultimate make-ahead breakfast—easy to prep, absolutely delicious, and guaranteed to impress. Whether you’re hosting brunch, meal prepping, or just want a lazy morning treat, this sweet, custardy, blueberry-packed dish is the perfect solution.

Make it once, and you’ll never go back to flipping individual slices of French toast again!

Share this article via: