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Slice of blueberry French toast casserole drizzled with warm maple syrup on a floral plate, with fresh blueberries on the side.

Baked French Toast with Blueberries

A comforting oven-baked French toast filled with juicy blueberries and bright lemon, perfect for slow mornings and holiday brunches.
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Prep Time 10 minutes
Cook Time 45 minutes
Soaking Time 30 minutes
Total Time 1 hour 25 minutes
Servings: 10
Course: Breakfast, Brunch
Cuisine: American, Comfort Food
Calories: 420
Ingredients Equipment Method Nutrition Notes

Ingredients
  

  • 12 cups rustic bread cubes day-old, cut into 1-inch pieces for structure
  • 2 ¼ cups blueberries fresh or frozen, added frozen if using frozen berries
  • 7 large eggs room temperature for smooth custard
  • 2 ¼ cups milk whole or 2%, for richness
  • 1 ¼ cups heavy cream adds custardy texture
  • ¾ teaspoon vanilla extract pure vanilla preferred
  • 10 tablespoons granulated sugar divided, for custard and topping
  • 1 ¼ tablespoons lemon zest finely grated, adds brightness
  • ¼ teaspoon kosher salt balances sweetness
  • 3 tablespoons unsalted butter cold, diced for topping

Equipment

  • 1 9x13-inch baking dish Any 3-quart casserole dish works well
  • 1 Large mixing bowl Used for whisking the custard ingredients
  • 1 Whisk Helps blend the custard until smooth
  • 1 set Measuring Cups and Spoons Needed for accurate ingredient measurements
  • 1 Plastic wrap or foil Optional, for covering if chilling overnight

Method
 

  1. Grease a large baking dish and layer half of the bread cubes evenly across the bottom, then scatter most of the blueberries on top before finishing with the remaining bread and berries.
  2. Whisk the eggs, milk, cream, vanilla, most of the sugar, lemon zest, and salt until fully blended and smooth.
  3. Slowly pour the custard mixture over the bread, gently pressing down so the liquid absorbs without crushing the fruit.
  4. Allow the casserole to rest for at least 30 minutes, or cover and refrigerate overnight for a deeper custard texture.
  5. Heat the oven to 350°F and let the dish sit at room temperature while the oven warms if it was refrigerated.
  6. Sprinkle the remaining sugar evenly over the top, dot with butter, and bake until puffed and golden with a set center.
  7. Remove from the oven and let rest briefly before slicing to allow the custard to firm up slightly.

Nutrition

Serving: 220gCalories: 420kcalCarbohydrates: 48gProtein: 12gFat: 20gSaturated Fat: 11gPolyunsaturated Fat: 2gMonounsaturated Fat: 6gCholesterol: 150mgSodium: 260mgPotassium: 210mgFiber: 3gSugar: 18gVitamin A: 600IUVitamin C: 6mgCalcium: 150mgIron: 2mg

Notes

This casserole is designed for relaxed mornings when comfort matters most. The contrast of crisp edges and creamy center makes every slice feel special, especially when shared around the table.

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