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Buttercream Flag Cake (Simple 4th of July Party Dessert)

Buttercream Flag Cake (Simple 4th of July Party Dessert)

Celebrate summer with this vibrant Buttercream Flag Cake, a delightful dessert that captures the spirit of festive occasions. This colorful cake is perfect for gatherings, showcasing red, white, and blue layers that are as delicious as they are visually appealing. Crafted with a simple technique and minimal decorating skills, it’s an ideal treat for both novice and experienced bakers. The combination of moist vanilla cake and rich buttercream frosting will impress your guests, making it a standout centerpiece for any celebration. Customize the colors to match your theme or add your favorite toppings for a personal touch.

  • Total Time: 48 minutes
  • Yield: Approximately 12 servings 1x

Ingredients

Scale
  • 1 box vanilla cake mix
  • 1 cup (240 g) full-fat sour cream
  • ½ cup (120 ml) whole milk
  • ⅓ cup (75 g) butter (melted)
  • 2 large eggs (room temperature)
  • blue food coloring
  • red food coloring
  • 1 cup (227 g) butter (room temperature)
  • 1 cup (190 g) vegetable shortening
  • 2 lbs (907 g) confectioners' sugar
  • 1½ tbsps. (22 ml) water
  • 1½ tsps (7 ml) vanilla extract
  • 1 tbsp red, white and blue sprinkles (optional)

Instructions

  1. Preheat the oven to 350°F (175°C) and grease a 9×13-inch baking pan.
  2. In a large mixing bowl, combine cake mix, sour cream, milk, melted butter, and eggs; beat until smooth.
  3. Pour batter into the pan and swirl in blue and red food coloring.
  4. Bake for 25–28 minutes or until a toothpick comes out clean. Cool completely.
  5. Beat butter and shortening for frosting until fluffy; gradually add confectioners' sugar, then mix in water and vanilla.
  6. Divide frosting into three bowls; tint one red, one blue, and leave one white.
  7. Pipe designs on cooled cake using colored frostings as desired.
  • Author: Emmeline
  • Prep Time: 20 minutes
  • Cook Time: 28 minutes
  • Category: Dessert
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 serving
  • Calories: 360
  • Sugar: 45g
  • Sodium: 180mg
  • Fat: 16g
  • Saturated Fat: 8g
  • Unsaturated Fat: 7g
  • Trans Fat: 0g
  • Carbohydrates: 54g
  • Fiber: 0g
  • Protein: 3g
  • Cholesterol: 40mg

Keywords: Ensure ingredients are at room temperature for best results. For extra flair, serve with fresh berries or whipped cream.

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