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Perfect Lemon Blueberry Layer Cake Recipe with Easy Lavender Buttercream Frosting

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A moist and tender lemon blueberry layer cake with a delicate, fragrant lavender buttercream frosting. This cake balances bright citrus, sweet berries, and subtle floral notes for a memorable dessert.

Ingredients

Scale
  • 2 ½ cups (320g) all-purpose flour, sifted
  • 2 ½ teaspoons (10g) baking powder
  • ½ teaspoon (3g) salt
  • 1 cup (226g) unsalted butter, softened
  • 1 ¾ cups (350g) granulated sugar
  • 4 large eggs, room temperature
  • 1 cup (240ml) whole milk, room temperature
  • Zest of 2 large lemons
  • ¼ cup (60ml) fresh lemon juice
  • 1 teaspoon (5ml) vanilla extract
  • 1 ½ cups (225g) fresh or frozen blueberries
  • 1 cup (226g) unsalted butter, softened (for frosting)
  • 4 cups (480g) powdered sugar, sifted
  • 3 tablespoons (45ml) heavy cream
  • 1 tablespoon dried culinary lavender
  • 1 teaspoon (5ml) vanilla extract (for frosting)
  • Pinch of salt

Instructions

  1. Preheat oven to 350°F (175°C). Grease two 8-inch round cake pans and line bottoms with parchment paper.
  2. In a medium bowl, sift together flour, baking powder, and salt. Set aside.
  3. In a stand mixer or large bowl, beat 1 cup softened butter with granulated sugar on medium speed until light and fluffy, about 4-5 minutes.
  4. Add eggs one at a time, beating well after each addition.
  5. Mix in lemon zest, lemon juice, and vanilla extract.
  6. Reduce mixer speed to low. Add dry ingredients in three additions, alternating with milk, beginning and ending with dry ingredients. Mix just until combined.
  7. Gently fold in blueberries with a spatula, being careful not to overmix.
  8. Divide batter evenly between prepared pans and smooth tops.
  9. Bake 28-32 minutes or until a toothpick inserted in the center comes out clean. Let cool in pans 10 minutes, then invert onto wire racks to cool completely.
  10. Steep dried lavender in hot heavy cream for 10 minutes. Strain and cool completely.
  11. Beat 1 cup softened butter until creamy. Gradually add powdered sugar alternating with cooled lavender cream. Add vanilla extract and salt. Beat on high until light and fluffy, about 5 minutes.
  12. Place one cake layer on serving plate. Spread lavender buttercream evenly on top. Place second layer on top and cover entire cake with remaining frosting.
  13. Optional: Garnish with fresh blueberries or dried lavender buds.

Notes

Use room temperature ingredients for best results. Steep lavender in cream and strain well to avoid bitter bits. Fold blueberries gently to prevent color bleed. If frosting is too soft, chill before frosting. For extra moisture, brush cake layers with lemon syrup before frosting.

Nutrition

Keywords: lemon blueberry cake, lavender buttercream, layer cake, easy cake recipe, floral frosting, summer dessert, party cake

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