Lemon Blackberry Cake Recipe: A Bright, Berry-Filled Layer Cake

There is something wonderfully cheerful about a Lemon Blackberry Cake. The first bite brings bright lemon zest, then a soft burst of blackberry, followed by creamy frosting that ties everything together. I made this cake on a warm afternoon when the kitchen smelled of butter, citrus, and berries, and it disappeared before the plates had fully cleared. That is usually a good sign.

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This lemon blackberry cake recipe is designed for a beautiful layer cake without making the process feel overly complicated. The sponge stays tender, the blackberry cake filling adds a jewel-like center, and the lemon frosting keeps the flavor fresh rather than heavy. It is lovely for a birthday, afternoon tea, family gathering, or any day that needs a little color.

Lemon Blackberry Cake Ingredients

1. 315 grams all-purpose flour
2. 250 grams granulated sugar
3. 2 teaspoons baking powder
4. 1/4 teaspoon fine salt
5. 230 grams unsalted butter, softened
6. Zest of 2 lemons
7. 3 large eggs, at room temperature
8. 240 milliliters whole milk
9. 1 teaspoon vanilla extract
10. 60 milliliters freshly squeezed lemon juice
11. 90 grams fresh blackberries, roughly chopped
12. 180 grams blackberry jam
13. 225 grams unsalted butter for the frosting, softened
14. 250 grams powdered sugar
15. 100 grams white chocolate, melted and cooled slightly
16. 2 tablespoons milk, plus more if needed
17. 1 teaspoon vanilla extract for the frosting
18. Fresh blackberries and lemon zest, for decorating

How to Make This Lemon Blackberry Cake Recipe

Begin by heating the oven to 180°C, or 350°F. Grease and line a 23 by 33 centimeter baking pan with parchment paper. A sheet pan works especially well because the cooled cake can be cut into neat layers.

Whisk the flour, sugar, baking powder, and salt in a large bowl. Add the softened butter and beat until the mixture looks sandy, with no large pieces of butter remaining. Mix in the lemon zest, eggs, milk, and vanilla. Pour in the lemon juice and beat just until the batter becomes smooth. Fold in the chopped blackberries carefully so they remain visible rather than breaking apart completely.

Spread the batter evenly in the prepared pan. Bake for 30 to 35 minutes, until the center springs back lightly and a skewer comes out clean. Let the cake cool completely before cutting. Warm cake is fragile and can make the filling slide.

For the frosting, beat the softened butter until pale and creamy. Add the powdered sugar in two additions, mixing in the milk and vanilla as you go. Beat in the melted white chocolate once it has cooled slightly. The frosting should be smooth and spreadable, not runny.

Cut three six-inch rounds from the cooled sheet cake. Use scraps to fill any small gaps in the first layer. Place one cake layer on a serving plate, spread with frosting, and spoon blackberry jam over the top. Add another cake layer and repeat. Finish with the final layer, cover the top with frosting, and decorate with berries and lemon zest.

Pro Tips for Better Cake Recipes

• Use room-temperature eggs, butter, and milk so the batter combines evenly.
• Zest the lemons before squeezing them. It is much easier and captures more fragrant oil.
• Chill the assembled cake for at least two hours so the layers set firmly.
• Spread a thin frosting border around each layer before adding jam to help prevent leaks.

Variations and Substitutions

For a stronger berry flavor, replace half the jam with mashed fresh blackberries. If you prefer a simpler lemon cake with blackberries, bake the batter in two round pans and serve it as a traditional layer cake. Raspberries can replace blackberries, while orange zest gives the cake a softer citrus note.

Ingredient Substitutions

• Use plant-based butter and unsweetened oat milk for a dairy-free version.
• Replace whole milk with buttermilk for a slightly tangier crumb.
• Use seedless blackberry preserves if you prefer a smoother filling.
• White chocolate frosting can be replaced with plain vanilla buttercream.

Troubleshooting Tips

• If the cake is dry, it may have been baked too long. Begin checking a few minutes early.
• If the frosting is too soft, refrigerate it for 15 minutes before spreading.
• If the jam runs out of the sides, use less filling and pipe a thicker frosting border.
• If the layers crack, do not worry. Press the pieces together and cover the outside with frosting.

Storage and Serving Suggestions

Keep the finished cake covered in the refrigerator for up to three days. Let it stand at room temperature for 20 to 30 minutes before serving so the buttercream softens. Serve thin slices with tea, coffee, or a spoonful of lightly whipped cream. Extra blackberries should be added shortly before serving for the freshest appearance.

Lemon Blackberry Cake FAQs

Can I use frozen blackberries?

Yes. Thaw and drain them thoroughly, then pat them dry before folding them into the batter.

Can I make this as a Lemon Blackberry Layer Cake?

Yes. Bake the batter in two greased round pans, then split and fill the cooled layers if they are tall enough.

How do I keep the blackberry filling from leaking?

Pipe or spread a ring of buttercream around the edge of each layer, then place the jam inside that border.

Can I prepare the cake ahead of time?

Absolutely. Assemble it the day before, cover it well, and refrigerate until ready to decorate and serve.

What makes this different from a Crumbl Lemon Blackberry Cake?

This is a celebration-style layer cake with a soft sponge and generous filling, while a cookie-style version has a denser baked base.

Can this become a Lemon Blackberry Wedding Cake?

Yes. Bake multiple tiers, use a firm buttercream, and chill each tier thoroughly before stacking.

Laura

Lemon Blackberry Cake

A tender lemon cake layered with blackberry jam, white chocolate buttercream, fresh blackberries, and lemon zest.

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Prep Time 45 minutes mins

Cook Time 35 minutes mins

Chilling time 2 hours hrs

Total Time 3 hours hrs 20 minutes mins

Servings: 12 slices

Course: Dessert

Cuisine: American

Calories: 610

Ingredients Equipment Method Notes

Ingredients

  

• 315 g all-purpose flour
• 250 g granulated sugar
• 2 teaspoons baking powder
• 1/4 teaspoon fine salt
• 230 g unsalted butter softened
• 2 lemons lemon zest finely grated
• 3 large eggs at room temperature
• 240 ml whole milk
• 1 teaspoon vanilla extract
• 60 ml lemon juice freshly squeezed
• 90 g fresh blackberries roughly chopped
• 180 g blackberry jam seedless if preferred
• 225 g unsalted butter for frosting, softened
• 250 g powdered sugar
• 100 g white chocolate melted and slightly cooled
• 2 tablespoons milk for frosting
• 1 teaspoon vanilla extract for frosting
• as needed fresh blackberries and lemon zest for decoration

Equipment

• 23 x 33 cm baking pan
• parchment paper
• electric mixer
• 6-inch cake ring
• Offset spatula

Method

 

1. Prepare the pan: Heat the oven to 180°C or 350°F. Grease and line a 23 x 33 cm baking pan with parchment paper.
2. Mix the batter: Whisk flour, sugar, baking powder, and salt. Beat in butter until sandy. Add lemon zest, eggs, milk, vanilla, and lemon juice, mixing until smooth. Fold in blackberries.
3. Bake: Spread the batter in the pan and bake for 30 to 35 minutes. Cool completely.
4. Make the frosting: Beat butter until creamy. Add powdered sugar, milk, and vanilla. Beat in cooled melted white chocolate until smooth.
5. Assemble: Cut three six-inch cake rounds. Layer cake, frosting, and blackberry jam twice. Finish with frosting, fresh blackberries, and lemon zest.
6. Chill: Refrigerate the cake for at least two hours before slicing and serving.

Notes

• Use room-temperature ingredients for a smoother batter.
• Keep the cake chilled until the layers are firm.
• Add fresh berries shortly before serving.