Introduction

This Blueberry Lemon Cake dazzles with soft lemon layers and jewel-toned blueberries nestled in berry-tinted buttercream. It looks like a bakery masterpiece but is surprisingly achievable with a little patience and gentle handling. The fresh lemon flavor and vibrant blueberries make it a perfect treat for any occasion.

A close-up of a slice of layered cake held over a white marbled surface by a woman's hand with a rose gold fork. The cake has three layers of soft yellow sponge, alternating with two layers of white cream mixed with fresh blueberries inside. The top is covered with a smooth white cream layer, decorated with fresh blueberries and two swirls of piped white cream on each side. The background shows a blurred whole cake with the same decoration, resting on a white plate on the white marbled surface. photo taken with an iphone --ar 4:5 --v 7

Ingredients

For the cake:

1/2 cup milk (room temperature, about 70°F)
1/2 cup sour cream (full-fat)
3 egg whites
3 tbsp lemon juice
1 tbsp lemon zest
1 1/2 tbsp vanilla essence
1/4 tsp almond extract
2 cups flour
1 2/3 cups sugar
1 3/4 tsp baking powder
1/2 tsp salt
3/4 cup butter (softened)
1 1/3 cups blueberries

For the blueberry reduction:

1/2 cup blueberries (frozen)
1 cup blueberries (fresh or frozen wild blueberries)
1 1/2 tbsp sugar
1 tbsp lemon juice
1 tbsp water

For the frosting:

1 1/2 cups butter (unsalted)
1/2 tsp salt
6 cups icing sugar (sifted)
4 tbsp lemon juice (freshly squeezed)

Instructions

Step 1: Preheat your oven to 350°F and grease three 6-inch round cake pans. Bring milk, sour cream, and butter to room temperature. Zest and juice the lemons. Sift icing sugar and measure all dry ingredients into one bowl to prepare for smooth baking.
Step 2: In a bowl, whisk milk, sour cream, egg whites, lemon juice, lemon zest, vanilla essence, and almond extract until well combined. Meanwhile, in a saucepan over medium heat, combine 1 cup blueberries, sugar, lemon juice, and water. Simmer for 8-10 minutes until berries burst and liquid reduces by half. Allow the compote to cool completely.
Step 3: Beat softened butter for 1 minute until creamy. Add dry ingredients and beat until mixture resembles damp sand with no visible flour streaks. Pour in wet mixture and mix gently for 30 seconds until combined. Toss blueberries with 1 tbsp flour to prevent sinking, then fold them into the batter carefully.
Step 4: Divide batter evenly into the prepared pans and smooth tops. Bake for 30 minutes or until a toothpick comes out with a few moist crumbs. Cool in pans for 15 minutes, then transfer to wire racks to cool completely. Strain the cooled blueberry compote to extract liquid and discard solids.
Step 5: Beat 1 1/2 cups butter with salt until pale and fluffy. Gradually add sifted icing sugar, beating until smooth. Stir in lemon juice. Reserve 1 cup lemon frosting, then fold cooled blueberry liquid into the remaining frosting until berry-tinted and smooth.
Step 6: Place a cake layer on a serving plate. Pipe a ring of lemon frosting around the edge and fill the center with berry frosting. Repeat with the second layer, then top with the final layer. Cover the cake with lemon frosting and decorate with frozen blueberries for a jewel-like finish.
Step 7: Refrigerate the assembled cake for at least 20 minutes to firm the frosting. Remove 15 minutes before serving to soften the frosting slightly and enhance flavor and texture.

Tips & Variations

Toss blueberries with a tablespoon of flour before folding into the batter to prevent them from sinking.
Use frozen blueberries for the best texture and berry distribution in the cake.
Cool the blueberry compote completely before mixing it into the frosting to avoid melting the buttercream.
Chill the cake before slicing and use a sharp knife dipped in hot water for clean, neat slices.
Try adding a touch of almond extract for a subtle nutty depth.

Storage

Store the finished cake in an airtight container in the refrigerator for up to 5 days; the buttercream holds up well when chilled. Bring slices to room temperature about 15 minutes before serving for the best flavor and texture. Unfrosted cake layers can be wrapped tightly and frozen for up to 3 months, thawing overnight in the fridge before frosting. For decorated cakes, freeze uncovered for 1 hour to firm frosting before wrapping and freezing up to 1 month.

How to Serve

A close-up of a slice of cake held by a woman's hand on a gold fork. The cake has four layers: the top and bottom layers are light yellow sponge cake with a soft texture, the second and fourth layers are white cream, and the third layer is a mix of white cream with whole blueberries that add a dark blue color. On top of the cake slice, there is a layer of white cream with piped dollops of cream on the edges, decorated with fresh blueberries that look plump and shiny. The background shows more cake on a white plate, placed on a white marbled surface with soft lighting, and some white flowers blurred out in the background. photo taken with an iphone --ar 4:5 --v 7

Serve this delicious recipe with your favorite sides.

FAQs

How do I prevent blueberries from sinking in the cake?

Tossing blueberries with flour before folding them into the batter creates a light coating that helps suspend them evenly during baking. Also, fold the berries in gently and use frozen berries if possible.

Can I make this cake ahead of time?

Yes, you can bake the cake layers a day or two in advance and keep them wrapped tightly in the fridge. Prepare the frosting and assemble closer to serving time for the freshest results. The finished cake tastes great even after refrigerating overnight.