Photo 15-12-2020, 22 41 12-min.jpg

Unicorn Birthday Cake Recipe

We don’t care how old you are—everybody, including full-fledged adults, deserves a fun birthday cake to celebrate another year. All the better if it’s a homemade birthday cake, piled high with fluffy buttercream frosting and crowned with one, two, three, or 63 candles.

Ingredients 

CAKE INGREDIENTS

  • 9 Tablespoons unsalted butter softened

  • 3 cups granulated sugar

  • 1 cup canola oil, vegetable oil would also work

  • 4 teaspoons vanilla extract

  • 4 cups+ 2 Tbsp all-purpose flour (all of the flour goes into the cake batter, you will also need additional flour for preparing the cake pan)

  • 4 1/2 teaspoons baking powder

  • 1 1/2 teaspoons salt

  • 1 1/2 cup milk

  • 9 egg whites room temperature preferred

  • 1/2 cup sprinkles

BUTTERCREAM INGREDIENTS

  • 1 lb unsalted butter softened to room temperature

  • 1/4 teaspoon salt

  • 6 cups powdered sugar

  • 6 Tbsp heavy cream

  • 2 teaspoons vanilla extract

Preparation

  1. Preheat the oven to 350F (175C) and prepare three 8-inch round cake pans by generously greasing and flouring. Be sure to shake out excess flour.

  2. In a stand mixer, beat butter on medium-low speed until creamy.

  3. Add sugar and oil and beat until all ingredients are well-combined and creamy.

  4. Scrape down the sides and bottom of the bowl and then stir in your vanilla.

  5. In a separate bowl, whisk together your flour, baking powder, and salt.

  6. Measure out your milk.

  7. With mixer on medium speed, gradually alternate between adding the flour mixture and the milk to the butter mixture, starting and ending with the flour mixture. Stir until each one is almost completely combined before adding the next.

  8. Pause occasionally to scrape down the sides and bottom of bowl.

  9. In a separate bowl, combine your egg whites and, with a hand-mixer on high-speed, beat until stiff peaks form.

  10. Using a spatula, gently fold your egg whites and sprinkles into your batter. Take care to scrape the sides and bottom of the bowl so that ingredients are well-combined, and take care not to over-mix.

  11. Evenly divide cake batter into prepared pans.

  12. Bake on 350F (175C) for 35-40 minutes, or until a toothpick inserted in the center of each cake layer comes out clean or with few crumbs (it should not be wet). For best results, rotate your cake pans halfway through baking to ensure even baking.

  13. Cakes will be a light golden brown when done baking.

  14. Remove cakes from oven and allow to cool for 15 minutes. Run a butterknife around the inside rim of each pan and invert each onto a cooling rack.

  15. Allow to cool completely before frosting.

Frosting

  1. In stand mixer, beat butter on medium-speed until creamy.

  2. Add salt and beat again for about 20 seconds.

  3. Gradually, about 1 cup at a time, add powdered sugar, waiting until each cup is completely mixed before adding the next cup.

  4. Tbsp at a time, add the heavy cream on medium-high speed, waiting until each addition is well-combined before adding the next 2 Tbsp.

  5. Add flavoring (vanilla extract) and food coloring of your choice. Stir on medium-high for 30 seconds.

  6. Transfer one layer of your cooled cake to serving platter. Use frosting to ice the top. Add the next layer, ice the top of that. Add your third layer on top and ice the top, and then do a thin "crumb coating" around the entire cake.

  7. Transfer to freezer for 10-15 minutes, then remove and apply a clean, thick coat of frosting around the entire cake.

NOTES: 

  • Use sprinkles/jimmies or round sequin "quin" sprinkles to keep your cake batter white. Nonpareils may bleed through your batter and chnge the coloring of your cake.

  • This cake may also be made in three 9" pans, just decrease the baking time. Start checking the cakes for doneness at 25 minutes.

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