If you love bright citrus desserts, this Lemon Blackberry Cake is one of those recipes that feels bakery-fancy but is actually simple to make at home. Soft lemon cake layers are filled with sweet lemon curd, fresh blackberries, and fluffy vanilla buttercream for a dessert that’s fresh, vibrant, and perfect for spring or summer gatherings.
I first made this cake when I had a bunch of blackberries that needed to be used up and wanted something a little special for dessert. The tart lemon paired with the juicy berries turned out to be the perfect combo. It’s the kind of cake that looks impressive on the table but still feels homemade and comforting.
If you enjoy bright fruit desserts like this, you might also love lemon and blackberry cheesecake, lemon lush dessert, lemon cookie bars, or classic lemon bundt cake. Those recipes have the same fresh citrus flavor that makes this one such a favorite.
Why You’ll Love This Recipe
- Bright Fresh Flavor: Lemon zest, lemon juice, and juicy blackberries create the perfect balance of sweet and tart.
- Beautiful Layer Cake: The lemon curd filling and berries make each slice look bakery-worthy.
- Soft and Moist Texture: Buttermilk and butter keep the cake tender and rich.
- Perfect for Special Occasions: Great for spring gatherings, Easter, showers, or birthdays.
Ingredients
Lemon Blackberry Cake
Equipment
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mixing bowls
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Electric hand mixer or stand mixer
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measuring cups and spoons
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Rubber Spatula
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8-inch round cake pans (2–3)
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Parchment Paper
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Cooling racks
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Offset spatula for frosting
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Cake turntable (optional but helpful)
Ingredients
For the cake:
- 2 ½ cups all-purpose flour
- 2 teaspoons baking powder
- ½ teaspoon baking soda
- ½ teaspoon salt
- 1 cup unsalted butter softened
- 1 ¾ cups granulated sugar
- 4 large eggs
- 1 tablespoon lemon zest
- ¼ cup fresh lemon juice
- 1 teaspoon vanilla extract
- 1 cup buttermilk
- 2 cups fresh blackberries
- 1 tablespoon flour for tossing berries
For the filling:
- 1 cup store-bought or homemade lemon curd
For the buttercream:
- 1 ½ cups unsalted butter softened
- 6 cups powdered sugar
- 3-4 tablespoons heavy cream or milk
- 1 ½ teaspoons vanilla extract
- Generous pinch of salt
Optional garnish:
- Fresh blackberries
- Lemon slices
Instructions
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Preheat the oven to 350°F. Grease and line two or three 8-inch round cake pans with parchment paper.
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In a medium bowl, whisk together the flour, baking powder, baking soda, and salt. Set aside.
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In a large bowl, beat the butter and sugar together until light and fluffy, about 2–3 minutes.
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Add the eggs one at a time, mixing well after each addition.
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Mix in the lemon zest, lemon juice, and vanilla extract.
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Alternate adding the dry ingredients and buttermilk to the butter mixture, beginning and ending with the dry ingredients. Mix just until combined.
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Toss the blackberries with 1 tablespoon of flour, then gently fold them into the batter.
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Divide the batter evenly among the prepared pans and smooth the tops.
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Bake for 30–35 minutes, or until a toothpick inserted in the center comes out clean.
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Let the cakes cool in the pans for 10–15 minutes, then remove and cool completely on wire racks.
To make the buttercream
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Beat the softened butter until creamy.
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Gradually add the powdered sugar, mixing on low speed.
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Add the cream, vanilla, and salt, then beat on medium-high until light and fluffy.
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Adjust with more cream if needed for spreading consistency.
To assemble
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Place one cake layer on a serving plate. Spread a thin layer of buttercream across the top and around the outer edge of the layer to create a barrier, then spread lemon curd in the center. Repeat with remaining layers.
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Crumb coat the entire cake with a thin layer of buttercream and refrigerate for at least 1 hour.
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Frost the top and sides of the cake with the remaining buttercream.
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Decorate with fresh blackberries and lemon slices if desired. Chill for 30–60 minutes before slicing for cleaner cuts.
Notes
- Coat berries in flour before folding into batter.
- Let cake layers cool completely before frosting.
- Chill the crumb coat to make final frosting easier.
- Add extra lemon zest for stronger citrus flavor if desired.
Storage: Store the cake covered in the refrigerator for up to 4 days. Reheating: Cake is best served slightly chilled or at room temperature. Let slices sit out for about 20 minutes before serving. Freezing: Unfrosted cake layers can be frozen for up to 2 months. Wrap them tightly in plastic wrap and place in a freezer-safe bag. Thaw overnight in the refrigerator before assembling.
Nutrition
Wendy’s Tips
- Toss the blackberries with a little flour before adding them to the batter so they don’t sink to the bottom of the cake layers.
- Use fresh lemon zest and juice for the best bright citrus flavor. Bottled juice won’t give the same result.
- If your buttercream feels too thick, add an extra splash of cream until it reaches a smooth spreading consistency.
- Chill the crumb-coated cake before final frosting. This helps keep crumbs out of the buttercream and makes decorating easier.
- Variation: You can swap blackberries for raspberries or blueberries if that’s what you have on hand.
- Variation: For extra lemon flavor, add a thin layer of lemon curd between every cake layer.
FAQ
Do you have questions about this recipe? Here are the answers to the most commonly asked questions.
Yes. You can bake the cake layers a day ahead and store them tightly wrapped. Assemble and frost the cake the next day.
Insert a toothpick in the center of the cake. If it comes out clean or with just a few crumbs, the cake is ready.
Yes. Two or three 8-inch round pans work well. You could also use a 9×13 pan for a simpler sheet cake version.
Spread a thin ring of buttercream around the edge of the cake layer before adding the lemon curd. This creates a barrier that holds the filling in place.
Yes, but don’t thaw them first. Add them frozen and toss them with flour to prevent excess moisture.
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