Introduction

There is something especially inviting about a lemon blueberry cake cooling on the kitchen counter. This moist and tender cake combines fresh citrus brightness with juicy bursts of blueberry, making it perfect for spring brunches, summer gatherings, or any time you crave a cheerful homemade dessert.

A slice of three-layered cake sits on a white plate, each layer showing light yellow sponge cake with dark purple blueberries inside. Between each cake layer is a thick white frosting that looks smooth and creamy. The top layer is covered fully with the same white frosting and topped with fresh blueberries dusted lightly with white powder. On the plate next to the cake slice are a few blueberries and a small piece of lemon with some white sprinkles on top. The background shows whole lemons blurred softly behind the cake, and the plate is placed on a white marbled texture. Photo taken with an iphone --ar 4:5 --v 7

Ingredients

For the Cake:

2 1/2 cups all-purpose flour, divided
2 teaspoons baking powder
1/2 teaspoon baking soda
1/2 teaspoon fine salt
3/4 cup unsalted butter, softened
1 1/2 cups granulated sugar
3 large eggs, room temperature
2 tablespoons fresh lemon zest
1/4 cup fresh lemon juice
1 teaspoon vanilla extract
1 cup sour cream, room temperature
1/4 cup whole milk
1 1/2 cups fresh blueberries
1 tablespoon all-purpose flour (for tossing with blueberries)

For the Lemon Glaze:

1 1/2 cups powdered sugar
2 to 3 tablespoons fresh lemon juice
1 teaspoon lemon zest

Instructions

Step 1: Preheat your oven to 350°F (175°C). Grease a 9-inch round cake pan or an 8-inch square pan and line the bottom with parchment paper for easier removal.

Step 2: In a medium bowl, whisk together 2 1/2 cups flour, baking powder, baking soda, and salt. Set aside.

Step 3: In a large bowl, beat the softened butter and granulated sugar until pale and fluffy, about 3 to 4 minutes.

Step 4: Add the eggs one at a time, beating well after each. Mix in the lemon zest, lemon juice, and vanilla extract. The batter may look slightly curdled—that’s normal.

Step 5: In a small bowl, combine sour cream and milk. Add the dry ingredients to the butter mixture in three additions, alternating with the sour cream mixture, beginning and ending with the dry ingredients. Stir just until combined each time; do not overmix.

Step 6: Toss blueberries with 1 tablespoon flour, then gently fold them into the batter to keep them from sinking.

Step 7: Pour batter into the prepared pan and smooth the top. Bake for 45–55 minutes (loaf pan may take 55–65 minutes) until a toothpick inserted in the center comes out clean or with a few moist crumbs. Cool in the pan for 15 minutes, then transfer to a wire rack to cool completely.

Step 8: Whisk powdered sugar, lemon juice, and lemon zest together to make the glaze. Drizzle over the cooled cake and let it set before slicing.

Tips & Variations

Use fresh lemons with fragrant skins as the zest holds most of the lemon flavor and adds brightness.

If using frozen blueberries, toss them with flour before folding in, and fold them directly from frozen to reduce color streaking.

Avoid overmixing after adding flour to keep the cake tender and light.

Try a crumb topping with flour, sugar, and cold butter for added texture.

For a richer finish, swap the glaze for a lemon cream cheese frosting.

Bake as muffins for a quick, portable treat; reduce baking time accordingly.

Storage

Store the cake in an airtight container at room temperature for up to 2 days. In warmer climates, refrigerate for up to 5 days, letting slices return to room temperature before serving. To freeze, wrap the unglazed cake tightly in plastic and foil, and freeze for up to 2 months. Thaw overnight in the refrigerator or for a few hours at room temperature, then add glaze before serving.

FAQs

Can I use frozen blueberries instead of fresh blueberries?

Yes, frozen blueberries work well if used straight from the freezer and tossed with flour before folding into the batter. Avoid thawing them first to prevent excess moisture and color streaking. Baking time may need to be increased slightly.

Why did my blueberries sink to the bottom of the cake?

Blueberries sink if the batter is too thin or if they are added without a flour coating. Tossing the blueberries with flour and using a batter thick enough to support them helps keep berries evenly distributed throughout the cake.