5-Minute Rainbow Layer Cake (No-Bake)
Stack store-bought pound cake slices with rainbow-tinted whipped frosting for an instant layer-cake look. It's sweet, colorful, and ready to slice in 5 minutes.
- Total time
- 5 min
- Servings
- 8
- Calories
- 340
- Protein
- 3g

Ingredients
- 1 loaf (10–12 oz) store-bought pound cake
- 1 cup heavy whipping cream
- 2 tbsp powdered sugar
- 4 drops per color gel food coloring (red, yellow, blue, green)
- ¼ tsp vanilla extract
Instructions
- 1
Pour cream into a bowl. Whip with a hand mixer or whisk until soft peaks form, ~2 minutes.
- 2
Add powdered sugar and vanilla. Whip until stiff peaks form, another 1–2 minutes.
- 3
Divide frosting into 4 bowls. Tint each with a different gel color, stirring until blended.
- 4
Slice pound cake into 4 horizontal layers using a serrated knife or cake leveler.
- 5
Stack the layers on a plate, spreading a different rainbow color frosting between each.
- 6
Frost the top and sides with remaining frosting, mixing any leftover colors for a marbled look.
Tools you’ll need
- mixing bowl
- hand mixer or whisk
- 4 small bowls for coloring
- serrated knife or cake leveler
- offset spatula or butter knife
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