Print

Perfect Flag Sheet Cake Recipe with Strawberries and Blueberries Easy and Homemade

perfect flag sheet cake - featured image

A festive and easy-to-make vanilla sheet cake decorated with fresh strawberries and blueberries arranged in a patriotic flag design, perfect for summer celebrations and casual get-togethers.

Ingredients

Scale
  • 2 ยฝ cups all-purpose flour
  • 2 ยฝ teaspoons baking powder
  • ยฝ teaspoon salt
  • 1 cup unsalted butter, softened
  • 1 ยพ cups granulated sugar
  • 4 large eggs, room temperature
  • 1 tablespoon pure vanilla extract
  • 1 cup whole milk (or almond milk for dairy-free option)
  • 2 cups fresh strawberries, hulled and sliced
  • 2 cups fresh blueberries
  • 1 ยฝ cups heavy whipping cream, chilled
  • 3 tablespoons powdered sugar
  • 1 teaspoon vanilla extract (for whipped cream)

Instructions

  1. Preheat your oven to 350ยฐF (175ยฐC). Grease a 9×13 inch sheet cake pan with butter or non-stick spray, then lightly flour it or line with parchment paper for easy removal.
  2. In a medium bowl, whisk together 2 ยฝ cups all-purpose flour, 2 ยฝ teaspoons baking powder, and ยฝ teaspoon salt. Set aside.
  3. Using an electric mixer, beat 1 cup softened unsalted butter with 1 ยพ cups granulated sugar on medium speed until fluffy and pale, about 4-5 minutes.
  4. Beat in the eggs one at a time, ensuring each is fully incorporated before adding the next. Mix in 1 tablespoon vanilla extract.
  5. Alternate adding the dry ingredient mixture and 1 cup milk to the butter mixture, starting and ending with dry ingredients. Mix on low speed just until combined.
  6. Pour the batter evenly into the prepared pan, smoothing the surface with a spatula. Tap the pan gently on the counter to release air bubbles.
  7. Bake for 35-40 minutes, or until a toothpick inserted in the center comes out clean. The top should be lightly golden, and the edges will start to pull away from the pan slightly.
  8. Let the cake cool in the pan on a wire rack for at least 30 minutes before adding the whipped cream topping.
  9. In a chilled bowl, whip 1 ยฝ cups heavy cream with 3 tablespoons powdered sugar and 1 teaspoon vanilla extract until stiff peaks form.
  10. Spread the whipped cream evenly over the cooled cake. Arrange sliced strawberries in stripes on the right side to mimic the flag stripes. Create a blue rectangle in the top left corner with blueberries.

Notes

Use room temperature eggs and softened butter for a lighter cake crumb. Chill mixing bowls and beaters before whipping cream to achieve stiff peaks. If whipped cream softens, refrigerate cake for 15 minutes before serving. Frozen berries can be used if thawed and drained well. For dairy-free version, substitute butter with coconut oil and milk with oat or almond milk; use coconut cream for whipped topping. For gluten-free, use a gluten-free flour blend with xanthan gum if needed.

Nutrition

Keywords: flag cake, sheet cake, strawberries, blueberries, vanilla cake, patriotic dessert, summer dessert, easy cake recipe, homemade cake