Lemon Blueberry Sourdough Toast

Featured in: Sweet & Spiced Treats

This comforting dish combines tangy lemon and juicy blueberries with hearty sourdough cubes soaked in a rich custard. The mixture is layered, chilled to absorb flavors, then baked until golden and set. A sprinkle of cinnamon sugar adds a warm, sweet touch. Ideal for weekend brunch, it can be prepared ahead and reheated. Savory notes from the lemon zest and fresh fruit balance the creamy custard, creating a bright, satisfying experience.

Updated on Sat, 21 Feb 2026 09:48:23 GMT
Lemon Blueberry Sourdough French Toast Bake with golden edges and juicy berries, perfect for a bright weekend brunch.  Save to Pinterest
Lemon Blueberry Sourdough French Toast Bake with golden edges and juicy berries, perfect for a bright weekend brunch. | mellowspice.com

There's something magical about waking up to the aroma of cinnamon-sugar caramelizing in the oven, mingling with the bright scent of fresh lemon and juicy blueberries. This Lemon Blueberry Sourdough French Toast Bake transforms simple sourdough bread into a luxurious breakfast casserole that's equally at home at a lazy Sunday brunch or a special holiday gathering. The tangy sourdough provides the perfect canvas for a creamy custard infused with vanilla and fresh lemon, while plump blueberries burst with sweetness in every bite. Best of all, you can prepare it the night before and simply pop it in the oven when you're ready to serve.

Lemon Blueberry Sourdough French Toast Bake with golden edges and juicy berries, perfect for a bright weekend brunch.  Save to Pinterest
Lemon Blueberry Sourdough French Toast Bake with golden edges and juicy berries, perfect for a bright weekend brunch. | mellowspice.com

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The beauty of this French toast bake lies in its simplicity and versatility. Unlike traditional stovetop French toast that requires standing over the griddle, this casserole does all the work for you. The sourdough bread soaks up the lemon-vanilla custard overnight, becoming tender and custardy throughout while developing those coveted golden, slightly crispy edges. The cinnamon-sugar topping melts into a delicate crust that adds textural contrast to each creamy, fruit-studded bite.

Ingredients

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  • 1 loaf (about 400 g / 14 oz) sourdough bread, cut into 1-inch cubes
  • 1 ½ cups (225 g) fresh or frozen blueberries
  • Zest of 1 lemon
  • 6 large eggs
  • 2 cups (480 ml) whole milk
  • ½ cup (120 ml) heavy cream
  • ⅓ cup (65 g) granulated sugar
  • 2 tsp pure vanilla extract
  • ¼ tsp salt
  • Juice of 1 lemon
  • 2 tbsp (28 g) unsalted butter, melted
  • 2 tbsp (25 g) granulated sugar
  • ½ tsp ground cinnamon

Instructions

Step 1: Prepare the baking dish
Grease a 9x13-inch (23x33 cm) baking dish. Arrange the sourdough cubes evenly in the dish. Scatter blueberries and lemon zest over the bread.
Step 2: Make the custard
In a large bowl, whisk together eggs, milk, cream, sugar, vanilla, salt, and lemon juice until fully combined.
Step 3: Assemble
Pour the custard evenly over the bread and berries, pressing down lightly to ensure all bread absorbs the mixture.
Step 4: Refrigerate
Cover and refrigerate for at least 30 minutes (or overnight for best results).
Step 5: Preheat oven
Preheat oven to 350°F (175°C).
Step 6: Add topping
Drizzle melted butter over the surface. Mix sugar and cinnamon together and sprinkle on top.
Step 7: Bake
Bake uncovered for 45 minutes, or until the center is set and the top is golden brown.
Step 8: Serve
Cool for 10 minutes before serving. Serve warm, optionally with maple syrup or a dusting of powdered sugar.

Zusatztipps für die Zubereitung

For the best texture, use day-old or slightly stale sourdough bread—it absorbs the custard beautifully without becoming mushy. If your bread is fresh, you can dry out the cubes by toasting them in a 300°F oven for 10 minutes before assembling. When pressing the bread into the custard, be gentle but thorough; every cube should be moistened. If using frozen blueberries, there's no need to thaw them first—they'll release their juices as they bake, creating pockets of jammy sweetness throughout the casserole. To check for doneness, the center should be set but still have a slight jiggle, and the edges should be golden and pulling away slightly from the sides of the dish.

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Varianten und Anpassungen

This recipe is wonderfully adaptable to suit different tastes and dietary needs. For a dairy-free version, substitute plant-based milk and cream—coconut cream works particularly well for richness. Try swapping blueberries for raspberries, blackberries, or even sliced strawberries for a different berry experience. Add a handful of chopped pecans or sliced almonds to the topping for extra crunch. For a more indulgent version, add a cream cheese layer: beat 8 oz softened cream cheese with 2 tablespoons sugar and dollop between the bread layers before adding custard. Orange zest and cranberries make a delicious holiday variation, or try replacing the lemon with almond extract and adding sliced peaches in summer.

Serviervorschläge

This French toast bake shines as the centerpiece of a weekend brunch table. Serve it warm with pure maple syrup, a dusting of powdered sugar, or a dollop of whipped cream. For an elegant touch, top with additional fresh blueberries and lemon zest. It pairs beautifully with crispy bacon or breakfast sausage for those who want a sweet-savory combination. On the beverage side, the bright lemon notes complement a cup of Earl Grey tea perfectly, while the dish's richness balances nicely with a citrusy mimosa or fresh-squeezed orange juice. Leftovers reheat beautifully in the microwave or oven, making it excellent for meal prep—enjoy slices throughout the week for a special breakfast treat.

A cozy sourdough French toast casserole baked with lemon zest and fresh blueberries, ideal for special breakfast gatherings.  Save to Pinterest
A cozy sourdough French toast casserole baked with lemon zest and fresh blueberries, ideal for special breakfast gatherings. | mellowspice.com

Whether you're hosting a special brunch or simply treating yourself to a cozy weekend breakfast, this Lemon Blueberry Sourdough French Toast Bake delivers comfort and brightness in equal measure. With its make-ahead convenience, crowd-pleasing flavors, and beautiful presentation, it's destined to become a staple in your breakfast repertoire. Each serving provides approximately 315 calories, 12g fat, 41g carbohydrates, and 10g protein—a balanced start to any special morning.

Recipe FAQs

Can I use frozen blueberries for this dish?

Yes, frozen blueberries work well. Thaw slightly or add them frozen; they will release juice during baking, enhancing flavor.

How long should the custard soak before baking?

Refrigerate covered for at least 30 minutes to allow the bread to absorb the custard, or overnight for deeper flavor.

What bread type works best here?

Sourdough bread is preferred for its texture and tang, but sturdy bread like French or brioche can be used as alternatives.

Can I prepare this dish in advance?

Yes, assemble and refrigerate overnight, then bake fresh in the morning for convenience and enhanced flavor melding.

Are there dairy-free options available?

Vegetable-based milk and cream substitutes can replace dairy ingredients without compromising texture or taste.

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Lemon Blueberry Sourdough Toast

Sourdough bread with juicy blueberries and lemon custard, baked to golden perfection for a bright brunch.

Prep Time
15 minutes
Cook Time
45 minutes
Overall Time
60 minutes
Created by Hannah Clarke

Recipe Category Sweet & Spiced Treats

Skill Level Easy

Cuisine American

Total Yield 6 Number of Servings

Dietary Details Vegetarian-Friendly

What You Need

Bread & Fruit

01 1 loaf sourdough bread, cut into 1-inch cubes (approximately 14 ounces)
02 1½ cups fresh or frozen blueberries
03 Zest of 1 lemon

Custard

01 6 large eggs
02 2 cups whole milk
03 ½ cup heavy cream
04 ⅓ cup granulated sugar
05 2 teaspoons pure vanilla extract
06 ¼ teaspoon salt
07 Juice of 1 lemon

Topping

01 2 tablespoons unsalted butter, melted
02 2 tablespoons granulated sugar
03 ½ teaspoon ground cinnamon

How To Make

Step 01

Prepare baking dish and assemble bread mixture: Grease a 9x13-inch baking dish with butter or cooking spray. Arrange sourdough cubes evenly in the prepared dish. Scatter blueberries and lemon zest over the bread layer.

Step 02

Combine custard ingredients: In a large mixing bowl, whisk together eggs, whole milk, heavy cream, granulated sugar, vanilla extract, salt, and lemon juice until fully combined and smooth.

Step 03

Soak bread in custard: Pour the custard mixture evenly over the bread and berries. Press down lightly with the back of a spoon to ensure all bread pieces absorb the liquid thoroughly.

Step 04

Chill overnight: Cover the baking dish with plastic wrap and refrigerate for at least 30 minutes. Overnight refrigeration yields optimal results and enhanced flavor development.

Step 05

Preheat oven: Remove casserole from refrigerator. Preheat oven to 350°F.

Step 06

Apply butter and cinnamon sugar topping: Drizzle melted butter evenly over the surface. In a small bowl, combine granulated sugar and ground cinnamon. Sprinkle the mixture uniformly across the top.

Step 07

Bake until set: Bake uncovered for 45 minutes, or until the center is set and the top is golden brown. The custard should be just firm when lightly touched.

Step 08

Rest and serve: Allow the casserole to cool for 10 minutes before serving. Serve warm with optional accompaniments such as maple syrup or powdered sugar.

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Tools Needed

  • 9x13-inch rectangular baking dish
  • Large mixing bowl
  • Whisk
  • Measuring cups and spoons
  • Sharp knife and cutting board

Allergy Details

Review all components for potential allergens and talk to your doctor with any questions.
  • Contains eggs
  • Contains milk
  • Contains wheat gluten
  • May contain trace nuts or soy depending on bread source

Nutrition Details (per serving)

This nutritional breakdown is for your information and isn't a substitute for health advice.
  • Total Calories: 315
  • Total Fat: 12 g
  • Carbohydrates: 41 g
  • Proteins: 10 g

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