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Rainbow Chocolate Roll Cake

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  • Author: Olivia
  • Prep Time: 35 minutes
  • Cook Time: 12 minutes
  • Total Time: 2.5 hours
  • Yield: 10 servings 1x
  • Category: Dessert
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Description

Rainbow Chocolate Roll Cake is a festive, colorful dessert featuring a rich chocolate sponge cake rolled around vibrant rainbow-tinted whipped cream. Perfect for birthdays or special occasions, it’s as stunning as it is delicious.


Ingredients

Units Scale
  • For the Chocolate Sponge Cake:
  • 4 large eggs
  • 3/4 cup granulated sugar
  • 1 teaspoon vanilla extract
  • 1/2 cup all-purpose flour
  • 1/4 cup unsweetened cocoa powder
  • 1 teaspoon baking powder
  • 1/4 teaspoon salt
  • 2 tablespoons milk
  • 2 tablespoons unsalted butter, melted
  • For the Rainbow Cream Filling:
  • 1 1/2 cups heavy whipping cream
  • 1/4 cup powdered sugar
  • 1 teaspoon vanilla extract
  • Gel food coloring (assorted colors)

Instructions

  1. Preheat oven to 350°F (175°C). Line a 10×15-inch jelly roll pan with parchment paper and lightly grease.
  2. In a bowl, beat eggs and sugar until pale and fluffy. Add vanilla extract and mix well.
  3. Sift together flour, cocoa powder, baking powder, and salt. Gently fold into the egg mixture.
  4. Add melted butter and milk, mixing just until combined and smooth.
  5. Pour batter into the prepared pan and spread evenly. Bake for 10–12 minutes or until cake springs back when touched.
  6. Immediately invert the cake onto a clean kitchen towel dusted with powdered sugar. Remove parchment and roll the cake with the towel while warm. Let cool completely.
  7. Whip heavy cream with powdered sugar and vanilla until stiff peaks form.
  8. Divide whipped cream into separate bowls (5–6) and tint each with a different gel food color.
  9. Unroll the cooled cake and spread or pipe the colored creams in even stripes or swirls across the cake surface.
  10. Re-roll the cake tightly and chill for at least 1 hour before serving.
  11. Optional: Dust with powdered sugar or drizzle with chocolate before slicing.

Notes

  • Roll the sponge while warm to prevent cracking.
  • Gel food coloring is ideal to maintain cream texture.
  • Swirl the colors slightly for a marble effect instead of stripes.
  • Add a thin layer of jam under the cream for extra flavor.
  • Use buttercream for a richer filling and more structure.

Nutrition

  • Serving Size: 1 slice
  • Calories: 290
  • Sugar: 22g
  • Sodium: 130mg
  • Fat: 18g
  • Saturated Fat: 11g
  • Unsaturated Fat: 6g
  • Trans Fat: 0g
  • Carbohydrates: 28g
  • Fiber: 2g
  • Protein: 5g
  • Cholesterol: 100mg