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A slice of delicious Lemon Blueberry Cake with Creamy Frosting, layered with blueberries and white frosting, topped with fresh blueberries.

Lemon Blueberry Cake with Creamy Frosting

This lemon blueberry cake is soft, moist, and bursting with fresh citrus and juicy berries. Its beautiful layers and creamy frosting make it a standout dessert perfect for sharing and Pinterest inspiration.
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Prep Time 20 minutes
Cook Time 30 minutes
Total Time 50 minutes
Servings: 12 servings
Course: Dessert
Cuisine: American
Calories: 520
Ingredients Equipment Method Notes

Ingredients
  

For the cake
  • 2 cups granulated sugar
  • 1/2 cup vegetable oil
  • 3 large eggs
  • 2 tablespoons lemon zest
  • 1/4 cup fresh lemon juice
  • 1 teaspoon lemon flavoring
  • 1/2 cup sour cream
  • 2 1/2 cups all purpose flour for the cake
  • 3 teaspoons baking powder
  • 1 teaspoon salt
  • 1 cup buttermilk
  • 9 ounces fresh blueberries
  • 2 tablespoons all purpose flour for tossing blueberries
For the frosting
  • 2 1/4 cups heavy whipping cream
  • 1 cup powdered sugar
  • 1 teaspoon vanilla flavoring
  • 16 ounces mascarpone cheese cold
  • 1 cup lemon curd

Equipment

  • 9 inch round cake pans
  • Large bowl
  • Another bowl

Method
 

  1. Preheat the oven to 350 degrees Fahrenheit and grease two 9 inch round cake pans.
  2. In a large bowl mix sugar and oil until combined, then add eggs one at a time, mixing well after each addition.
  3. Stir in lemon zest, lemon juice, lemon flavoring, and sour cream until smooth.
  4. In another bowl whisk flour, baking powder, and salt. Add the dry ingredients to the wet mixture in batches, alternating with buttermilk until a smooth batter forms.
  5. Toss blueberries with flour and gently fold into the batter.
  6. Divide the batter evenly between pans and bake for 25 to 30 minutes until a toothpick inserted in the center comes out clean. Cool completely.
  7. In a large bowl whip heavy cream, powdered sugar, and vanilla until soft peaks form.
  8. In another bowl beat mascarpone until smooth, then gently fold in the whipped cream to create a light frosting.
  9. Place one cake layer on a serving plate and spread half of the lemon curd over the top, then add a layer of frosting.
  10. Add the second cake layer and frost the top and sides. Chill for 20 minutes before slicing and serving.

Notes

For best texture, ensure all cake ingredients are at room temperature before mixing.