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Blueberry Lemon Swirl Cake

Fresh, tangy lemon and sweet blueberries combine for a dreamy cake perfect for any celebration!

Ingredients:

For the Cake:

  • 2 1/2 cups all-purpose flour
  • 2 teaspoons baking powder
  • 1/2 teaspoon baking soda
  • 1/4 teaspoon salt
  • 1/2 cup unsalted butter (room temperature)
  • 1 1/2 cups granulated sugar
  • 3 large eggs (room temperature)
  • 1 tablespoon lemon zest
  • 1/4 cup fresh lemon juice
  • 1 teaspoon vanilla extract
  • 1 cup buttermilk (or regular milk)
  • 1/2 cup fresh or frozen blueberries

For the Lemon Curd:

  • 1/2 cup fresh lemon juice
  • 1 tablespoon lemon zest
  • 1/2 cup granulated sugar
  • 2 large egg yolks
  • 4 tablespoons unsalted butter

For the Blueberry Sauce:

  • 1/2 cup fresh or frozen blueberries
  • 1/4 cup granulated sugar
  • 2 tablespoons water

For the Frosting:

  • 1/2 cup unsalted butter (room temperature)
  • 2 cups powdered sugar
  • 2-3 tablespoons heavy cream
  • 1 teaspoon vanilla extract

Directions:

Prepare the Cake:

  • Preheat oven to 350°F (175°C). Grease and line two 8-inch round cake pans with parchment.
  • Whisk together flour, baking powder, baking soda, and salt in a medium bowl.
  • Cream butter and sugar until fluffy. Add eggs one at a time, mixing well. Stir in lemon zest, lemon juice, and vanilla.
  • Alternate adding dry ingredients and buttermilk to the wet mixture, starting and ending with dry. Fold in blueberries gently.
  • Divide batter between pans. Bake 25-30 minutes until a toothpick comes out clean. Cool completely.

Make Lemon Curd:

  • Whisk lemon juice, zest, sugar, and yolks in a small saucepan.
  • Cook over medium heat, stirring until thickened (8-10 minutes). Remove from heat and stir in butter. Cool.

Make Blueberry Sauce:

  • Cook blueberries, sugar, and water in a saucepan over medium heat until berries burst and mixture thickens. Cool.

Make Frosting:

  • Beat butter until creamy. Gradually add powdered sugar, mixing until smooth. Add heavy cream and vanilla. Beat until light and fluffy.

Assemble the Cake:

  • Place one cake layer on a serving plate. Spread lemon curd on top.
  • Add the second cake layer and frost the entire cake.
  • Swirl blueberry sauce and lemon curd over the top using a skewer or knife. Decorate with blueberries and lemon slices.