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Perfect Patriotic Flag Sheet Cake Recipe with Fresh Berries for Easy Fourth of July Dessert

patriotic flag sheet cake - featured image

A light, moist vanilla sheet cake decorated with fresh strawberries and blueberries arranged to resemble the American flag, topped with fluffy whipped cream. Perfect for summer gatherings and easy to make with simple ingredients.

Ingredients

Scale
  • 2 ½ cups (315 grams) all-purpose flour
  • 2 ½ teaspoons baking powder
  • ½ teaspoon salt
  • ¾ cup (170 grams) unsalted butter, softened
  • 1 ¾ cups (350 grams) granulated sugar
  • 4 large eggs, room temperature
  • 2 teaspoons pure vanilla extract
  • 1 cup (240 ml) whole milk (or almond milk for dairy-free option)
  • 2 cups (480 ml) heavy whipping cream, chilled
  • ¼ cup (30 grams) powdered sugar, sifted
  • 1 teaspoon pure vanilla extract
  • 2 cups strawberries, hulled and sliced
  • 2 cups blueberries

Instructions

  1. Preheat oven to 350°F (175°C). Grease a 9×13 inch pan with butter or non-stick spray and lightly dust with flour.
  2. In a medium bowl, whisk together flour, baking powder, and salt until combined.
  3. Using an electric mixer, beat softened butter with granulated sugar on medium speed until light and fluffy, about 3-4 minutes.
  4. Beat in eggs one at a time, mixing well after each addition. Stir in vanilla extract.
  5. Alternately add dry ingredients and milk to the butter mixture, beginning and ending with dry ingredients. Mix just until incorporated.
  6. Pour batter into prepared pan and smooth the top.
  7. Bake for 35-40 minutes or until a toothpick inserted near the center comes out clean.
  8. Cool cake completely in the pan on a wire rack for at least 30 minutes.
  9. Chill mixing bowl and beaters if possible. Whip heavy cream with powdered sugar and vanilla extract on medium-high speed until soft peaks form.
  10. Spread whipped cream evenly over cooled cake.
  11. Arrange blueberries in the top left corner in a square shape for stars, then arrange sliced strawberries in horizontal rows for stripes.
  12. Chill cake in the refrigerator for at least 1 hour before serving.

Notes

Pat berries dry before placing to avoid soggy whipped cream. Use room temperature eggs for lighter crumb. Do not overmix batter or overwhip cream. Assemble cake close to serving time or keep whipped cream and berries separate until ready. Fresh berries are preferred over frozen for best texture.

Nutrition

Keywords: patriotic flag cake, Fourth of July dessert, sheet cake, fresh berries, vanilla cake, whipped cream topping, summer dessert