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Perfect Berry Flag Sheet Cake Recipe Easy Homemade 4th of July Dessert

berry flag sheet cake - featured image
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A light, moist sheet cake topped with silky vanilla buttercream and fresh berries arranged like a festive flag, perfect for summer celebrations.

Ingredients

Scale
  • 2 ½ cups (315g) all-purpose flour
  • 2 ½ tsp baking powder
  • ½ tsp baking soda (sodium bicarbonate)
  • ½ tsp salt
  • 1 cup (227g) unsalted butter, softened
  • 1 ¾ cups (350g) granulated sugar
  • 4 large eggs, room temperature
  • 2 tsp pure vanilla extract
  • 1 cup (240ml) buttermilk, room temperature (or milk + 1 tbsp lemon juice)
  • 1 cup (227g) unsalted butter, softened (for frosting)
  • 4 cups (480g) powdered sugar, sifted
  • 2–3 tbsp heavy cream
  • 2 tsp pure vanilla extract (for frosting)
  • Pinch of salt (for frosting)
  • 1 ½ cups fresh blueberries
  • 2 cups fresh strawberries, sliced
  • 1 ½ cups fresh raspberries

Instructions

  1. Preheat oven to 350°F (175°C). Grease a 9×13-inch sheet pan and line with parchment paper, leaving overhang for easy removal.
  2. Sift together flour, baking powder, baking soda, and salt in a large bowl. Whisk to combine.
  3. Using an electric mixer, beat softened butter and granulated sugar on medium speed until pale and fluffy, about 3-4 minutes.
  4. Beat in eggs one at a time, mixing well after each addition. Stir in vanilla extract.
  5. On low speed, alternate adding dry ingredients and buttermilk in three parts, starting and ending with dry ingredients. Mix just until combined.
  6. Pour batter evenly into prepared pan and smooth the top with an offset spatula.
  7. Bake for 35-40 minutes or until a toothpick inserted in the center comes out clean and cake springs back when pressed lightly.
  8. Cool cake in pan on wire rack for 15 minutes, then lift out using parchment overhang and cool completely before frosting.
  9. For frosting, beat softened butter with sifted powdered sugar on medium speed until fluffy. Add heavy cream, vanilla extract, and salt. Beat on high for 3-4 minutes until smooth and spreadable. Adjust cream for consistency.
  10. Spread a generous layer of vanilla buttercream evenly over cooled cake using an offset spatula.
  11. Arrange fresh blueberries in the upper left corner to mimic the stars of the flag. Use sliced strawberries and whole raspberries to create alternating red stripes horizontally across the cake. Press berries gently into frosting.

Notes

Use fresh berries for best results; frozen berries release moisture and can make the cake soggy. Chill frosting if too soft before spreading. Cool cake completely before frosting to prevent melting. For gluten-free, substitute flour with 1:1 gluten-free blend and adjust baking powder. Vegan adaptations possible with plant-based substitutes.

Nutrition

Keywords: berry cake, sheet cake, 4th of July dessert, vanilla buttercream, summer cake, berry flag cake, easy dessert

Find it online: https://pokirecipes.com/perfect-berry-flag-sheet-cake-recipe-easy-homemade-4th-of-july-dessert/