5 from 2 votes
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Layered Birthday Unicorn Cake

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This unicorn cake is one of my favorites! A layered vanilla cake that is colored for a festive feel when you slice into it. The decorations are simple to do but offer a stunning presentation value.

Layered cake piped with purple, blue, and pink frosting added with plastic unicorn cake topper horn and ears.

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Give this layered unicorn cake a try! Great for birthday parties, celebrations of any kind or a special treat to gift a friend or loved one.

This Unicorn Cake Is

  • Made with Boxed Cake Mix
  • Swirls of Color In The Cake For A Rainbow Design
  • Birthday Cake Idea or Any Celebration
  • Intermediate Piping Skills Needed

Ingredients For Layered Unicorn Cake

  • White Cake Mix
  • Eggs
  • Oil
  • Food Coloring
  • Butter
  • Powdered Sugar
  • Heavy Cream
  • Vanilla Extract

How to Make

The complete list of ingredients, quantities, and instructions can be found in the printable recipe card below.

Collage of decorating unicorn themed cake.
  1. Start by baking your cakes as directed. I add separate the cake and added different colors to create a rainbow look. This is optional.
  2. Once the cake is cooled, assemble the layered cake as directed below. Then frost the whole outside with the vanilla frosting. With some of the frostings create different colors to make the “hair” on the unicorn. (Photo 1)
  3. Add the horn to the top of the cake. Begin piping on the pink flowers, and then alternate colors to create that rainbow unicorn cake look. (Photo 2)
  4. Once you are done piping add the rest of the unicorn cake topper and slice and serve!
Layered cake with unicorn themed sitting on a table with green and white cloth.

Variations to Cake Recipe

Here are a few changes you can make to this layered unicorn cake if you want.

Colors of Cake – Feel free to use any colors to make the unicorn hair and such. There are so many different ways you could decorate your cake to make it special and perfect for your particular occasion.

Homemade Cake – Instead of boxed cake, use any of your favorite cake recipes to make a homemade cake! Feel free to get creative or do something simple like a classic white cake or even chocolate.

Toppers – There are tons of unicorn toppers you can buy to place on top. Or if you are crafty do homemade if you see fit. Feel free to use this cake tutorial as a guide to creating any look you want.


This cake will need to be placed in a covered container. If you leave your cake out in the air, it will begin to dry out and crust. Now with the frosting, I find it stores best refrigerated as it can break down a bit if the house is a bit warm, due to the butter and dairy in it.

In terms of freezing, you can freeze your cake for up to 3-4 months if you would like. Wrap in plastic wrap or foil then place in a container or bag.

A white plate with a slice of unicorn themed cake.

Common Questions

Do I need to level cakes for a layered cake?

You do need to use a knife or cake leveler tool to cut off any “dome” shape on the cake. This is needed as it will prevent the cake from leaning or falling over if one side of the cake is higher than the other side. Feel free to place the cake and cut with a knife and use your eye as a guide if you are not wanting to buy a special tool.

Do I need to have a crumb layer before I frost the layered cake?

If you are wanting to create an ultra-smooth base layered cake, creating a crumb layer will help in providing a smooth and bakery-worthy cake. If you are impatient, you can skip the crumb coat but you run the risk of the cake crumbling and clumping.

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Cake with unicorn decorations on a white plate.
5 from 2 votes

Unicorn Cake

Author: Kim Schob
Course: Desserts
Cuisine: American
Prep Time: 15 minutes
Cook Time: 30 minutes
Total Time: 45 minutes
Yields 32 Servings
This layered unicorn cake is a delicious and easy vanilla cake that is layered. Then you decorate to look like a colorful unicorn. A perfect birthday party cake idea for a unicorn lover.



White Cake:

  • 2 boxes of white cake mix
  • 8 large Egg whites
  • 2 ½ Cups (591 ½ g) water
  • 1 Cup (224 g) canola oil
  • Blue Purple and Pink gel food coloring
  • 3 – 9 inch round cake pans
  • 1 – 10 inch round cake board

Vanilla Frosting:

  • 3 Cups (681 g) Unsalted Butter softened
  • 6 Cups (720 g) powdered sugar
  • 5 tbsp heavy whipping cream
  • 2 tsp vanilla extract
  • Blue Black, Purple and Pink gel food coloring
  • 3 large piping bag with star tip
  • 1 small piping bag with number 5 tip
  • 4 medium mixing bowls
  • Plastic Unicorn cake topper horn and ears


Cake Directions:

  • Preheat oven to 350 and spray cake pans with pam baking spray
  • Using a hand mixer and large bowl, beat all cake ingredients until
  • combined and smooth
  • Divide the cake batter into 4 bowls
  • Mix in a few drops of Blue food coloring into one bowl
  • Min in a few drops of pink food coloring into the second bowl
  • Mix in a few drops of purple food coloring into the third bowl and leave the fourth bowl, as is
  • Alternate the batters by scooping in ¼ Cup of batter into each cake pan on top of each other to
  • create a tye dye effect
  • Place into the oven and back for 28-32 minutes or until a toothpick
  • comes out clean
  • Allow to cool completely

Frosting Directions:

  • Using a standing mixer, beat all ingredients except for the colors
  • until combined and smooth but stiff with peaks
  • Scoop 1 Cup of frosting into each of the 3 medium bowls and mix in a few drops of blue, pink and
  • purple into their own bowls and scoop a color into their own piping bags
  • Scoop 1⁄2 C of frosting into a small bowl and mix in a few drops of black food coloring. Scoop
  • frosting into the small piping bag

Building the Cake directions:

  • Place one cake layer onto the cake board and cut the dome off the cake
  • to make an even layer
  • Repeat step with other two layers
  • Scoop 1 Cup of white frosting into 1 side of the large piping bag
  • Scoop the red and pink frosting into the large piping bag and set aside
  • Scoop 1 Cup of white frosting onto the bottom layer and spread evenly
  • Place the second cake layer on top and spread evenly 1 more cup of frosting
  • Place the last layer of cake on top
  • Use the remaining white frosting and frost entire cake
  • Using the blue, pink and purple piping bags, start piping the “Hair” for the unicorn on the top and around one side of the cake to create a “Mane”
  • Using leftover pink frosting, frost the plastic ears
  • Outline the ears with white frosting and blue frosting
  • Place the horn, ears onto the cake
  • Use the black frosting to pipe out the detail of the eyes
  • Place into the fridge to harden the frosting before enjoying it!

Nutrition Information

Serving: 1 Serving Calories: 10070kcal (504%) Carbohydrates: 724g (241%) Protein: 33g (66%) Fat: 805g (1238%) Saturated Fat: 384g (2400%) Polyunsaturated Fat: 85g Monounsaturated Fat: 293g Trans Fat: 23g Cholesterol: 1567mg (522%) Sodium: 547mg (24%) Potassium: 637mg (18%) Sugar: 707g (786%) Vitamin A: 18121IU (362%) Vitamin C: 1mg (1%) Calcium: 255mg (26%) Iron: 1mg (6%)

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