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Easy Flag Cake Recipe Using Store-Bought Ingredients in 30 Minutes

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A quick and festive flag cake made with store-bought vanilla cake mix, frosting, and fresh berries, perfect for patriotic celebrations and ready in just 30 minutes.

Ingredients

Scale
  • 1 box vanilla cake mix (plus ingredients called for on the box, usually eggs, oil, and water)
  • Optional: 1 teaspoon vanilla extract
  • 1 tub (about 16 oz) store-bought vanilla or cream cheese frosting
  • 1 cup fresh strawberries, sliced
  • 1 cup fresh blueberries
  • Optional: powdered sugar for dusting

Instructions

  1. Preheat your oven to 350Β°F (175Β°C). Grease your 9×13 inch baking pan lightly with butter or non-stick spray.
  2. Prepare the cake batter: In a large bowl, combine the vanilla cake mix with eggs, oil, and water according to the package instructions. Add 1 teaspoon of vanilla extract if desired. Mix with an electric mixer or whisk until just smooth, about 5 minutes.
  3. Bake the cake: Pour the batter evenly into the prepared pan. Bake for 25-28 minutes, or until a toothpick inserted into the center comes out clean. Check at 22 minutes if your oven runs hot.
  4. Cool the cake: Let the cake cool in the pan on a cooling rack for about 15 minutes. Remove from the pan and place on a flat serving dish to finish cooling completely before frosting.
  5. Frost the cake: Spread the store-bought frosting evenly over the top of the cake with a spatula or butter knife, about 1/4 inch thick.
  6. Arrange the fruit: Place blueberries in the top left corner to represent the stars. Create horizontal strawberry stripes across the rest of the cake, alternating rows with frosting visible in between.
  7. Final touches: Optionally dust the cake lightly with powdered sugar. Chill the cake in the refrigerator for 15 minutes before serving to let the frosting set.

Notes

Ensure the cake is completely cool before frosting to prevent melting. Slice strawberries thinly for neat stripes. Dry berries well before placing on frosting to avoid sogginess. Store leftovers covered in the fridge for up to 3 days. Thaw and dry frozen berries if used.

Nutrition

Keywords: flag cake, easy cake recipe, store-bought cake mix, patriotic dessert, Fourth of July cake, berry cake, quick cake, no-bake frosting