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Rainbow Cake Roll

Rainbow Cake Roll: A Colorful Delight for Every Celebration

This Rainbow Cake Roll is a vibrant and fluffy dessert filled with creamy vanilla buttercream, perfect for any celebration.
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Prep Time 20 minutes
Cook Time 17 minutes
Chilling Time 1 hour
Total Time 1 hour 37 minutes
Servings: 12 slices
Course: Desserts
Cuisine: American
Calories: 250
Ingredients Equipment Method Nutrition Notes

Ingredients
  

For the Cake
  • 1 cup sour cream Can substitute with yogurt.
  • 1 cup buttermilk Regular milk can be used in a pinch.
  • 2 tablespoons vanilla extract Opt for pure extract for best flavor.
  • 6 large egg whites Essential for fluffiness.
  • 1/4 cup canola oil Coconut oil or melted butter can also be used.
  • 1 box white cake mix A homemade vanilla cake recipe can work.
  • 6 drops food coloring gel Liquid coloring can be used but may require more.
For the Buttercream Frosting
  • 1 cup unsalted butter Substitute with margarine for dairy-free.
  • 1 pinch salt Balances sweetness.
  • 4 cups powdered sugar Granulated sugar won't yield the same texture.
  • 2-4 tablespoons heavy cream or milk Use milk for lighter frosting.

Equipment

  • half sheet pan
  • Mixing bowl
  • Whisk
  • Piping bags
  • Plastic Wrap
  • Sharp Knife

Method
 

Step-by-Step Instructions
  1. Preheat the oven to 325°F (163°C) and prepare a half sheet pan with parchment paper.
  2. In a mixing bowl, whisk together sour cream, buttermilk, vanilla extract, egg whites, and canola oil until smooth.
  3. Gradually sift in the white cake mix, stirring gently until no lumps remain.
  4. Divide the batter into six bowls and add food coloring to each, mixing until vibrant.
  5. Pipe the colored batters diagonally into the pan to create striped layers.
  6. Bake for approximately 17 minutes, or until set.
  7. Cool in the pan for 5 minutes, then roll the cake while warm.
  8. Prepare the frosting by beating butter and salt until creamy, then gradually add powdered sugar.
  9. Spread buttercream across the cooled cake, unrolling it carefully.
  10. Re-roll without parchment and chill in the freezer for at least 1 hour.
  11. Slice into 3/4-inch pieces using a hot knife.

Nutrition

Serving: 1sliceCalories: 250kcalCarbohydrates: 35gProtein: 2gFat: 12gSaturated Fat: 7gPolyunsaturated Fat: 1gMonounsaturated Fat: 3gCholesterol: 40mgSodium: 170mgPotassium: 60mgSugar: 18gVitamin A: 400IUCalcium: 50mgIron: 0.5mg

Notes

This Rainbow Cake Roll is a delightful and colorful dessert that everyone will love!

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