This lemon blackberry cake is bright, soft, and bursting with citrus and berry flavor. Moist lemon cake layers, tangy lemon curd, and fresh blackberry frosting make it the perfect spring or summer cake.
Jump to: ℹ️ Overview | 🛒 Ingredients | 📷 How To Make | 👩🍳 Recipe Tips | 🥗 Serving Suggestions | 📝Full Recipe Card | 🍽 More
At A Glance
- ⏱ Ready In: 3 hours (including chilling)
- 🍽 Serves: 12 slices
- 🌱 Diet: Vegetarian
- 💪 Nutrition Highlights: Made with real fruit and fresh lemon for natural flavor
- 🥕 Main Ingredients: Lemon zest, fresh lemon juice, blackberries, butter, cream cheese, flour, eggs, sugar
- 🔥 Flavor Profile: Bright citrus, juicy berries, lightly tangy, soft and buttery
- 🧊 Meal-Prep Friendly: Keeps 4 days in the fridge and layers can be baked ahead
- Best Served With: Fresh berries, whipped cream, or a cup of coffee or tea.
This blackberry lemon cake is the kind of dessert that feels special without being overly heavy. The lemon cake layers are soft and tender with plenty of fresh lemon zest and juice, which gives them that clean citrus flavor.
Between the layers is a smooth lemon curd that adds a bright tang and balances the sweetness of the cake. Then the whole thing gets finished with a naturally pink blackberry frosting made from real berries.
The result is a layered cake that’s fruity, lightly tangy, and not overly rich. It’s the sort of cake that works beautifully for spring gatherings, Easter, birthdays, Mother’s Day, or summer celebrations.
👩🍳 You might also like these fruity desserts: cherry pistachio pavlova, mango cheesecake, lemon tiramisu, or French cheesecake with strawberries. More summer desserts here.
What You’ll Need
Here is what you’ll need for this lemon blackberry cake recipe. Find the full measurements in the recipe card below.
Lemon Cake Layers
- All-purpose flour – gives the cake structure while keeping the crumb soft.
- Lemon zest – one of the biggest flavor boosters in baking because the oils carry intense citrus aroma.
- Baking powder & baking soda – help the cake rise and stay fluffy.
- Fine salt – balances sweetness and enhances the lemon flavor.
- Unsalted butter – creates richness and a tender crumb.
- Granulated sugar – sweetens and helps aerate the batter during creaming.
- Eggs – provide structure and moisture.
- Whole milk – adds moisture and softness.
- Sour cream – keeps the cake extra tender and slightly tangy.
- Fresh lemon juice – gives that bright citrus bite.
- Vanilla extract – rounds out the flavor.
Lemon Curd Filling
- Fresh lemon juice & zest – the backbone of the curd’s citrus flavor.
- Granulated sugar – balances the acidity.
- Egg yolks – create that silky custard texture.
- Unsalted butter – makes the curd smooth and rich.
- Cornstarch – helps the curd thicken nicely.
- Pinch of salt – keeps the flavor balanced.
Blackberry Frosting
- Fresh or frozen blackberries – cooked down for concentrated berry flavor.
- Lemon juice – brightens the berries and keeps the frosting from tasting flat.
- Unsalted butter – forms the base of the buttercream.
- Cream cheese – adds a slight tang and balances sweetness.
- Powdered sugar – sweetens and stabilizes the frosting.
- Pinch of salt – enhances the berry flavor.
Ingredient Swap Tips
- Frozen blackberries work just as well as fresh.
- Greek yogurt can replace sour cream in the cake layers.
- Store-bought lemon curd can be used if you want a shortcut.
How To Make Lemon Blackberry Cake
Find the full recipe and nutritional information below. Here are some handy step-by-step photos for lemon blackberry cake.
- Preheat oven to 350°F / 175°C and grease three 8-inch round cake pans.
- Mix the dry ingredients: Whisk together flour, baking powder, baking soda, and salt.
- Cream butter and sugar: Beat butter, sugar, and lemon zest until light and fluffy, about 3 minutes.
- Add eggs: Mix in eggs one at a time, beating well after each addition.
- Add wet ingredients: Whisk milk, sour cream, lemon juice, and vanilla together.
- Combine batter: Alternate adding dry and wet ingredients to the butter mixture, starting and ending with dry ingredients.
- Bake: Divide batter between pans and bake 22–26 minutes, until a toothpick comes out clean.
- Make blackberry frosting: Cook berries and lemon juice until syrupy, strain seeds, chill, then beat into butter, cream cheese, and powdered sugar.
- Make lemon curd: Cook lemon juice, zest, sugar, yolks, salt, and cornstarch over medium-low heat until thick. Stir in butter and chill. This can be done before frosting or ahead of time!
- Assemble the cake: Layer cake with a frosting dam and lemon curd filling, crumb coat, chill, then frost fully.
Recipe Tips
- Use room-temperature ingredients. Cold dairy can cause the batter to curdle and bake unevenly.
- Don’t skip the frosting dam. A ring of frosting around the edge keeps the lemon curd from leaking out.
- Weigh your batter if possible. Even layers bake more evenly and look better when stacked.
- Chill the frosting if needed. If the frosting feels soft after adding the blackberry puree, chill it for 10–15 minutes.
- Storage: Store covered in the refrigerator for up to 4 days. Let the cake sit at room temperature for about 45 minutes before serving for the best texture.
- Make Ahead: Bake cake layers 1–2 days ahead and wrap tightly. Lemon curd can be made 3 days in advance.
Variations
- Turn this into a blackberry lemon sheet cake by baking in a 9×13 pan.
- Add fresh berries between the layers for extra texture.
- Swap blackberries for raspberries or strawberries for a different berry twist.
- You can turn this recipe into a cake in a jar variation.
Serving Suggestions
This blackberry cake really shines when served slightly softened at room temperature. The frosting becomes creamy and the lemon flavor pops a little more.
I like to garnish it with fresh blackberries, a sprinkle of lemon zest, or a few simple buttercream swirls. It’s perfect alongside coffee, iced tea, or even a glass of prosecco if you’re serving it for a celebration.
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Ingredients
Lemon Cake Layers
- 9.7 oz all-purpose flour 275 grams
- 1 tablespoon lemon zest
- 1 tablespoon baking powder
- ½ teaspoon baking soda
- ¾ teaspoon fine salt
- 8 oz unsalted butter, softened 227 grams
- 12.3 oz granulated sugar 350 grams
- 4 large eggs room temperature
- 4 oz whole milk 120 ml
- 4 oz sour cream 120 grams
- 2.6 oz fresh lemon juice 80 ml
- 1 tablespoon vanilla extract
Lemon Curd Filling
- 4 oz fresh lemon juice 120 ml
- 1 tablespoon lemon zest
- 4.7 oz granulated sugar 133 grams
- 4 large egg yolks
- 1.5 oz unsalted butter, cubed 42 grams
- 1½ tablespoons cornstarch
- Pinch of salt
Blackberry Frosting
- 7 oz fresh or frozen blackberries 200 grams
- 1 tablespoon lemon juice
- 8 oz unsalted butter, softened 227 grams
- 4 oz cream cheese, softened 113 grams
- 16 oz powdered sugar, sifted 450 grams
- Pinch of salt
Instructions
Cake Layers
- Preheat oven to 350°F (175°C). Grease and flour three 8-inch cake pans.
- Whisk flour, baking powder, baking soda, and salt in a bowl.
- In a large bowl, beat butter, sugar, and lemon zest for about 3 minutes until pale and fluffy.
- Add eggs one at a time, mixing well after each addition.
- Whisk milk, sour cream, lemon juice, and vanilla together.
- Add dry and wet ingredients alternately to the butter mixture, beginning and ending with dry ingredients. Mix just until combined.
- Divide batter evenly between pans.
- Bake 22–26 minutes, until a toothpick inserted comes out clean.
- Cool in pans for 10 minutes, then transfer to a rack to cool completely.
Lemon Curd
- Whisk lemon juice, zest, sugar, yolks, cornstarch, and salt in a saucepan.
- Cook over medium-low heat, whisking constantly, until thick enough to coat a spoon (170–175°F / 77–80°C), about 5–7 minutes.
- Remove from heat and whisk in butter until smooth.
- Strain, cover, and refrigerate until fully chilled.
Blackberry Frosting
- Cook blackberries and lemon juice in a saucepan over medium heat for 6–8 minutes, stirring and mashing until syrupy.
- Press through a fine mesh strainer and discard seeds. Chill completely.
- Beat butter and cream cheese until fluffy (2–3 minutes).
- Gradually add powdered sugar and salt.
- Beat in 3 tablespoons blackberry reduction, adding more for stronger color or flavor.
- Chill frosting briefly if it becomes too soft.
Assembly
- Level cooled cakes if needed.
- Place first layer on a cake board and pipe a frosting dam around the edge.
- Spoon ¼–⅓ cup lemon curd inside the dam.
- Add the second layer and repeat.
- Add the final layer and apply a crumb coat.
- Chill 20 minutes, then frost the cake fully.
- Decorate with fresh blackberries or lemon zest.
Notes
- Can I use frozen blackberries? Yes. Frozen berries work perfectly for the frosting since they are cooked down anyway.
- Can I use store-bought lemon curd? Absolutely. Homemade tastes great, but store-bought works well if you’re short on time.
- Why add lemon zest and juice? The zest contains concentrated citrus oils that deliver the strongest lemon flavor in baked goods.
- Can I make this cake ahead of time? Yes. Bake the cake layers a day or two ahead and keep them wrapped at room temperature. Lemon curd can be made 3 days in advance.
- Do I need three cake pans? If you only have two pans, bake the layers in batches.
- Use room-temperature ingredients. Cold dairy can cause the batter to curdle and bake unevenly.
- Don’t skip the frosting dam. A ring of frosting around the edge keeps the lemon curd from leaking out.
- Weigh your batter if possible. Even layers bake more evenly and look better when stacked.
- Chill the frosting if needed. If the frosting feels soft after adding the blackberry puree, chill it for 10–15 minutes.
- Storage: Store covered in the refrigerator for up to 4 days. Let the cake sit at room temperature for about 45 minutes before serving for the best texture.
- Turn this into a blackberry lemon sheet cake by baking in a 9×13 pan.
- Add fresh berries between the layers for extra texture.
- Swap blackberries for raspberries or strawberries for a different berry twist.
Nutrition
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