Naked Rainbow Layer Cake Recipe

Spread the luck, and celebrate this St. Patrick's Day with a naked rainbow layer cake.
Naked Rainbow Layer Cake

Naked Rainbow Layer Cake

Photo by: Abigail Barnes

Abigail Barnes

By: Abigail Barnes


Vanilla Cake
Double the recipe below to make six layers (as pictured).

4 large eggs
3 1/2 cups cake flour
4 teaspoons baking powder
1/2 teaspoon salt
1 cup unsalted butter at room temperature
2 cups granulated sugar
2 teaspoons pure vanilla extract
1 cup milk

Vanilla Buttercream Frosting

12 oz. unsalted softened butter
7 1/2 cup powdered sugar
1 1/2 teaspoon kosher salt
3 tablespoons plus 3 teaspoons whole milk
3 teaspoons pure vanilla extract
3 teaspoons fresh lemon juice


1. Preheat oven to 350 degrees F. Line bottom of the pans with parchment paper. Separate egg whites in a small bowl and yolks in another. Set aside.
2. In a separate bowl, roughly mix flour, baking powder and salt. Beat butter until soft using a stand mixer. Add 1 1/2 cups sugar and mix until fluffy. Add egg yolks one at a time, and continue to beat. Add vanilla into mixture. Scrape the sides of the bowl to thoroughly combine. Bring mixer to low speed, and slowly add flour mixture and milk.
3. In a separate bowl for the stand mixer, whisk egg whites until foamy. Add 1/2 cup sugar until mixture forms stiff peaks. Gently fold in egg white mixture into the batter. Be careful to not over mix. Fill cake pans evenly. Bake on center rack for about 25 minutes or until fully baked. Allow cakes to completely cool.
4. To make the buttercream frosting, add 1/2 the powdered sugar to the bowl using a stand mixer with a paddle attachment. Add in butter, kosher salt, 3 tablespoons whole milk, vanilla and lemon juice. Beat until moist. Scrape the sides of the bowl to thoroughly combine all ingredients. Add the rest of the powdered sugar and milk, mixing thoroughly.
5. Separate frosting into six bowls, leaving one with a little extra frosting for the top layer. Mix in desired food coloring to each bowl.
6. If you are not using the frosting immediately, tightly wrap and store at room temperature for up to 2 days or refrigerate for one week. If chilled, let buttercream come to room temperature and stir well to release any air bubbles before using.
7. To assemble the cake, remove any excess cake on top of each round for a flat, even surface. For a six-layered cake, use a cake leveler or long serrated knife to evenly slice cakes in half.
8. Cover first layer with red frosting, allowing some to drip over edges just slightly. Repeat steps for each layer with orange, yellow, green and blue frosting. Cover the top layer with purple frosting, and spread until top is smooth. Transfer to a cake stand.

Keep Reading

Next Up

9 St. Patrick's Day Cocktail Recipes That Are Better Than Green Beer

Mix it up this year with a St. Patrick's Day-inspired libation...or two.

Pink Snowball Cake Recipe

This cake is sure to be the center of attention at any spring or Easter gathering. Bake a dome-shaped chocolate cake, fill with marshmallow creme, frost with pastel pink icing and top with toasted coconut.

Irish Nacho Dip Recipe

Serve this delicious dip — flavored with stout beer — for St. Patrick's Day.

Unwrappable St. Patrick's Day Surprise Balls

It's all the fun of surprise balls with a St. Patrick's Day theme.

Pink Snowball Cakelettes Recipe

These cakelettes are reminiscent of a favorite childhood treat but in miniature form. You can eat them right away, but they're more flavorful and moist the next day.

Bunny Bottom Bark Recipe

This adorable candy makes a cute addition to Easter baskets and requires only a few ingredients..

Chocolate Coconut Candy Recipe

These white and dark chocolate covered coconut balls, filled with a raspberry surprise, are the perfect spring treat or addition to any Easter basket.

Lamb-Shaped Cookie Recipe

Use cereal marshmallows to turn chocolate sandwich cookies into fluffy little lambs!
More from:

St. Patrick's Day


Island Life

6:30am | 5:30c

Island Life

7am | 6c

Island Life

7:30am | 6:30c

Fixer Upper

8am | 7c

Fixer Upper

9am | 8c

Fixer Upper

10am | 9c

Fixer Upper

11am | 10c

Fixer Upper

12pm | 11c

Flip or Flop Atlanta

1:30pm | 12:30c

Flip or Flop Atlanta

2:30pm | 1:30c

Flip or Flop Atlanta

3:30pm | 2:30c

Flip or Flop

4:30pm | 3:30c

Flip or Flop

5:30pm | 4:30c

Flip or Flop

6:30pm | 5:30c

Flip or Flop

7:30pm | 6:30c
On Tonight
On Tonight

Flip or Flop

8pm | 7c

Flip or Flop

8:30pm | 7:30c

Flip or Flop Vegas

9:30pm | 8:30c

House Hunters

10pm | 9c

House Hunters

11pm | 10c

Flip or Flop Vegas

12:30am | 11:30c

House Hunters

1am | 12c

Flip or Flop

3:30am | 2:30c

Shop This Look

Found a living space you love in HGTV's Photo Library? Get the look in your own home with products from Wayfair.

Follow Us Everywhere

Join the party! Don't miss HGTV in your favorite social media feeds.