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A beautifully decorated unicorn cake with a golden horn and pastel buttercream mane

Unicorn Cake

A whimsical, colorful cake designed to resemble a unicorn, perfect for birthdays and celebrations with its vibrant colors and magical decorations.
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Prep Time 1 hour
Cook Time 30 minutes
Total Time 1 hour 30 minutes
Servings: 12 slices
Course: Cake, Dessert
Cuisine: American
Calories: 450
Ingredients Method Notes

Ingredients
  

For the Cake Layers
  • 3 cups all-purpose flour For structure and stability.
  • 2 cups granulated sugar For sweetness.
  • 4 large eggs Room temperature for even mixing.
  • 1 cup unsalted butter Softened, to provide moisture and richness.
  • 1 cup whole milk Or buttermilk for a soft, tender crumb.
  • 2.5 teaspoons baking powder To help the cake rise.
  • 2 teaspoons pure vanilla extract For flavor.
  • as needed gel food coloring Optional for colored layers.
For the Buttercream Frosting
  • 1.5 cups unsalted butter Softened.
  • 4-5 cups powdered sugar Sifted for a smooth texture.
  • 4-6 tablespoons heavy cream or milk To achieve desired frosting consistency.
  • 2 teaspoons vanilla extract For flavor.
  • as needed gel food coloring Optional for decorating.
  • as needed edible gold dust or glitter Optional for shimmer.
For the Decorations
  • as needed white fondant or modeling chocolate For the ears and unicorn horn.
  • as needed gold edible paint or spray For shimmering finish.
  • as needed piping tips and bags For buttercream designs.
  • as needed sprinkles and edible decorations Pastel sprinkles, edible pearls.
  • as needed black food coloring or edible pen For drawing the eyes.

Method
 

Bake the Cake Layers
  1. Preheat your oven to 350°F (175°C). Grease and line three 8-inch round cake pans with parchment paper.
  2. In a large bowl, cream together the softened butter and sugar until light and fluffy.
  3. Add the eggs one at a time, mixing well after each addition. Stir in vanilla.
  4. In another bowl, whisk together flour, baking powder, and salt. Gradually add to the butter mixture, alternating with milk.
  5. If creating colored layers, divide the batter and tint each portion with gel food coloring.
  6. Pour the batter into prepared pans and bake for 25–30 minutes, or until a toothpick comes out clean.
  7. Cool in the pans for 10 minutes, then transfer to wire racks to cool completely.
Prepare the Buttercream Frosting
  1. In a mixing bowl, beat the softened butter until smooth.
  2. Gradually add powdered sugar and mix well, then add vanilla extract and adjust consistency with cream or milk.
  3. Divide the frosting and tint with gel food coloring as desired.
Assemble and Crumb Coat the Cake
  1. Level the tops of the cooled cake layers.
  2. Layer the cakes with buttercream frosting in between, and apply a thin crumb coat over the entire cake.
  3. Chill in the refrigerator for 20–30 minutes.
Frost and Decorate the Cake
  1. Frost the entire cake with white buttercream and smooth it out.
  2. Roll fondant into a cone shape for the horn, and paint with edible gold.
  3. Shape fondant into triangles for ears and paint them gold.
  4. Attach the horn and ears on the cake.
  5. Pipe colorful buttercream swirls for the mane.
  6. Add decorations and eyes with edible pen or food coloring.
Serve and Enjoy
  1. Chill the cake for at least 20 minutes before serving.
  2. Slice and share!

Notes

Store leftovers in an airtight container in the refrigerator for up to 3 days.