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Show-Stopping Patriotic Flag Sheet Cake Recipe with Easy Whipped Cream Cheese Frosting

patriotic flag sheet cake - featured image

A festive and colorful patriotic flag sheet cake with moist layers and a silky whipped cream cheese frosting, perfect for celebrations like the Fourth of July.

Ingredients

Scale
  • 2 ½ cups (310 g) all-purpose flour
  • 2 ½ teaspoons baking powder
  • ½ teaspoon salt
  • 2 cups (400 g) granulated sugar
  • 1 cup (225 g) unsalted butter, softened
  • 4 large eggs, room temperature
  • 1 cup (240 ml) whole milk, room temperature
  • 2 teaspoons pure vanilla extract
  • Red gel food coloring
  • Blue gel food coloring
  • 8 oz (225 g) cream cheese, softened
  • ½ cup (115 g) unsalted butter, softened
  • 3 cups (360 g) powdered sugar, sifted
  • 1 teaspoon pure vanilla extract
  • 23 tablespoons (3045 ml) heavy cream

Instructions

  1. Preheat oven to 350°F (175°C). Grease and flour a 9×13-inch sheet pan or line with parchment paper.
  2. In a medium bowl, whisk together flour, baking powder, and salt. Set aside.
  3. In a large mixing bowl, beat softened butter and granulated sugar on medium speed until light and fluffy, about 3 to 5 minutes.
  4. Beat in eggs one at a time, mixing well after each. Add vanilla extract and mix until smooth.
  5. Add dry ingredients in three parts, alternating with milk, beginning and ending with dry ingredients. Mix each addition just until combined.
  6. Divide batter into three bowls: one large portion for white layer, 1 ½ cups for red layer, and 1 ½ cups for blue layer. Add red gel food coloring to one bowl and blue gel food coloring to another, mixing until vibrant.
  7. Pour white batter evenly into prepared pan. Spoon red batter onto one half of the pan on top of white, and blue batter onto the other half, smoothing gently.
  8. Bake for 35 to 40 minutes or until a toothpick inserted in the center comes out clean. Let cool completely in pan on a wire rack, about 1 hour.
  9. For frosting, beat cream cheese and softened butter until smooth. Gradually add powdered sugar, beating on low then high until fluffy. Add vanilla extract and heavy cream to achieve spreadable texture.
  10. Spread frosting evenly over cooled cake using an offset spatula. Optionally, decorate with blueberries on blue section and sliced strawberries or raspberries on red stripes.
  11. Chill cake in refrigerator for at least 30 minutes before slicing to set frosting.

Notes

Use gel food coloring for vibrant colors without thinning batter. Keep all dairy and eggs at room temperature for smooth batter and frosting. Do not overmix batter to avoid dense cake. Chill frosting if too soft before spreading. For gluten-free, substitute flour with gluten-free blend. For dairy-free, use dairy-free cream cheese and vegan butter.

Nutrition

Keywords: patriotic cake, flag cake, Fourth of July dessert, whipped cream cheese frosting, sheet cake, colorful cake, easy celebration cake