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Perfect Vanilla-Chocolate-Strawberry Swirled Sheet Cake Recipe

4.5 from 139 reviews

This Perfect Vanilla-Chocolate-Strawberry Sheet Cake is a beautifully marbled dessert featuring a moist vanilla base swirled with rich cocoa and vibrant strawberry flavors. Topped with creamy vanilla, chocolate, and strawberry frostings swirled to perfection, it’s a delightful treat for any occasion that enchants both the eyes and taste buds.

Ingredients

Scale

Cake Batter

  • 1 package white cake mix
  • Water, vegetable oil, and whole eggs as specified on the cake mix packaging
  • 2 tablespoons cocoa powder, unsweetened
  • 2 tablespoons strawberry jam, without seeds
  • 1/4 teaspoon red gel food coloring

Frosting

  • 1 cup softened butter
  • 2 1/4 cups icing sugar
  • 2 to 3 tablespoons milk
  • 1 teaspoon vanilla essence
  • 1 teaspoon seedless strawberry jam
  • Red gel food coloring as needed
  • 1 teaspoon cocoa powder, unsweetened

Instructions

  1. Prepare the Cake Batter: Preheat your oven to 350°F (175°C). Spray the bottom of a 13×9-inch pan with cooking spray to prevent sticking. In a large bowl, beat together the cake mix, water, oil, and eggs using an electric mixer on medium speed for about 2 minutes, scraping the bowl occasionally to ensure all ingredients are well combined.
  2. Create Swirled Batter Colors: Divide the prepared batter by placing 1 1/4 cups of it into a small bowl. Stir in 2 tablespoons of cocoa until well blended to create chocolate batter. In another small bowl, place another 1 1/4 cups of batter and add 2 tablespoons of strawberry jam along with 1/4 teaspoon of red gel food color, stirring until the color is even and vivid.
  3. Layer and Swirl the Batter: Pour the remaining plain batter into the bottom of the prepared pan. Drop tablespoons of the chocolate and strawberry batters randomly over the top of the plain batter. Use a table knife to gently pull through the batter to create a swirled, marbled effect.
  4. Bake and Cool the Cake: Bake the cake in the preheated oven for 28 to 30 minutes, or until a toothpick inserted into the center comes out clean. Remove the cake and allow it to cool completely, about 1 hour, to ensure it doesn’t melt the frosting later.
  5. Make the Frosting: In a large bowl, beat softened butter with an electric mixer on medium-high speed until smooth and creamy. Gradually beat in powdered sugar on low speed until smooth. Add 2 tablespoons of milk and vanilla extract, continuing to beat. If frosting is too stiff, add additional milk 1 teaspoon at a time to reach spreadable consistency.
  6. Color and Apply the Frosting: Set aside 1/4 cup of vanilla frosting in a small bowl and blend in 1 teaspoon of strawberry jam and red gel food coloring to desired shade. In another small bowl, mix 3 tablespoons of vanilla frosting with 1 teaspoon cocoa powder to create chocolate frosting. Spread the remaining vanilla frosting evenly over cooled cake. Drop spoonfuls of strawberry and chocolate frostings randomly on top. Use a small icing spatula to swirl all frostings over the cake decoratively.
  7. Serve and Store the Cake: Once frosted, serve immediately or store leftovers loosely covered at room temperature to maintain freshness. Enjoy your delicious and visually delightful sheet cake!

Notes

  • Ensure the cake is completely cooled before frosting to prevent melting.
  • You can adjust the intensity of strawberry and chocolate flavors by adding more jam or cocoa powder as preferred.
  • Use seedless strawberry jam to avoid texture inconsistencies in the batter and frosting.
  • For a more vibrant strawberry color, add red gel food coloring gradually until desired shade is reached.
  • Leftover frosted cake can be stored at room temperature for up to 2 days; refrigerate if storing longer.
  • The swirling technique in the batter and frosting creates a beautiful marbled look but don’t overmix to keep distinct colors.

Keywords: vanilla sheet cake, chocolate strawberry cake, marbled cake, layered frosting, swirled cake, easy sheet cake recipe, fruit-flavored cake