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Perfect Patriotic Flag Cake Recipe with Easy Vanilla Buttercream and Fresh Berries

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A festive and easy-to-make cake featuring fluffy vanilla layers, smooth homemade buttercream, and fresh red, white, and blue berries, perfect for patriotic celebrations.

Ingredients

Scale
  • 2 ½ cups (315 g) all-purpose flour
  • 2 ½ teaspoons baking powder
  • ½ teaspoon salt
  • 1 cup (227 g) unsalted butter, softened
  • 1 ¾ cups (350 g) granulated sugar
  • 4 large eggs, room temperature
  • 1 cup (240 ml) whole milk, room temperature
  • 2 teaspoons pure vanilla extract
  • 4 cups (480 g) powdered sugar, sifted
  • 1 ½ teaspoons pure vanilla extract (for buttercream)
  • 2–3 tablespoons (30–45 ml) whole milk or heavy cream
  • Pinch of salt (for buttercream)
  • 1 ½ cups (225 g) fresh strawberries, hulled and sliced
  • 1 cup (150 g) fresh blueberries
  • Optional: fresh raspberries

Instructions

  1. Preheat oven to 350°F (175°C). Grease two 9-inch round cake pans and line bottoms with parchment paper.
  2. In a medium bowl, whisk together flour, baking powder, and salt. Set aside.
  3. In a large bowl, beat softened butter and 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. Mix in vanilla extract.
  5. Reduce mixer speed to low. Add dry ingredients in three parts, alternating with milk, starting and ending with flour mixture. Mix just until combined.
  6. Divide batter evenly between prepared pans. Tap pans to release air bubbles.
  7. Bake for 30-35 minutes or until a toothpick inserted in the center comes out clean. Cakes should spring back when lightly pressed.
  8. Cool cakes in pans for 10 minutes, then turn out onto cooling racks. Cool completely before frosting.
  9. To make buttercream, beat softened butter until creamy. Gradually add powdered sugar, then vanilla extract and milk or cream. Beat until light and fluffy. Adjust consistency as needed.
  10. Place one cake layer on serving plate. Spread about ¾ cup buttercream evenly over top.
  11. Arrange sliced strawberries in three neat rows across the top for red stripes.
  12. Place second cake layer on top. Spread buttercream over top and sides.
  13. Decorate top left corner with fresh blueberries to create a star field. Fill remaining top with sliced strawberries.
  14. Chill cake if buttercream is too soft for easier spreading.

Notes

Use room temperature eggs and milk for better texture. Do not overmix batter to avoid dense cake. Chill buttercream if too soft for easier spreading. Add fresh berries just before serving to prevent sogginess. Level cake layers with serrated knife if domed. Frozen berries can be used if thawed and drained well.

Nutrition

Keywords: patriotic cake, flag cake, vanilla buttercream, fresh berries, 4th of July dessert, easy cake recipe, summer cake

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