Chocolate Unicorn Cake

5.0
(8)

Because sometimes you want your unicorns to taste a little bit less like rainbows, and little bit more like chocolate cake.

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Prep Time:
45 mins
Cook Time:
25 mins
Additional Time:
45 mins
Total Time:
1 hrs 55 mins
Servings:
8
Yield:
1 9-inch layer cake

Ingredients

Chocolate Cake:

  • 1 ¾ cups all-purpose flour

  • 1 cup dark cocoa powder (such as Hershey's® Special Dark), sifted

  • 2 teaspoons baking soda

  • 1 teaspoon baking powder

  • ¾ teaspoon salt

  • 1 cup firmly packed brown sugar

  • ½ cup white sugar

  • ½ cup unsalted butter, softened

  • 2 large eggs, at room temperature

  • 2 teaspoons vanilla extract

  • 1 cup strongly brewed coffee, cooled to room temperature

  • 1 cup sour cream

Vanilla Frosting:

  • 1 cup unsalted butter, softened

  • 4 cups sifted powdered sugar

  • 1 ½ teaspoons vanilla extract

  • ¼ teaspoon salt

  • 1 tablespoon heavy cream, or more as needed

Decorations:

  • 1 drop blue food coloring, or as needed

  • 1 drop purple food coloring, or as needed

  • 1 tablespoon pink sprinkles, or as needed

  • 1 (.75 ounce) tube black decorating gel

  • 4 marshmallows, quartered

  • 1 tablespoon pink sanding sugar, or as needed (Optional)

  • 8 birthday candles

Directions

  1. Preheat the oven to 350 degrees F (175 degrees C). Lightly grease two 9-inch cake pans and line with parchment paper.

  2. Whisk flour, cocoa powder, baking soda, baking powder, and salt together in a medium bowl.

  3. Combine sugars and butter in a large bowl; beat with an electric mixer until light and fluffy. Beat in eggs one at a time, thoroughly mixing after each addition. Beat in vanilla extract.

  4. Mix 1/3 of the flour mixture into the butter mixture until just combined. Mix in 1/2 of the coffee and 1/2 of the sour cream until just combined. Add remaining flour mixture alternately with remaining sour cream and coffee. Do not overmix. Divide batter between the cake pans.

  5. Bake in the preheated oven until a toothpick inserted into the center comes out with just a few moist crumbs attached, 25 to 30 minutes. Cool in the pans for 15 minutes. Run a knife around the edge of the pans before inverting cakes onto cooling racks. Peel off parchment paper. Cool cakes completely, about 30 minutes.

  6. Make frosting while cakes cool. Beat butter with an electric mixer until light and fluffy. Beat in powdered sugar, 1 cup at a time, until incorporated. Mix in vanilla extract and salt. Add heavy cream. Beat frosting on medium speed until light and fluffy, about 3 minutes. Add more heavy cream if needed to reach a spreadable consistency.

  7. Place 1/2 cup frosting into 2 separate bowls. Stir blue food coloring into one bowl and purple food coloring into the other. Place colored frostings into a piping bag fitted with a star tip.

  8. Place 1 cooled cake layer onto a cake plate. Top with 3/4 cup of white frosting. Place second cake layer on top. Frost the outside and top of the cake with remaining frosting.

  9. Divide the cake into 8 wedges by tracing a sharp knife through the frosting on the top; do not cut all the way through. Place 2 pink sprinkles in the innermost point to make unicorn's nostrils. Pipe the eyes and eyelashes near the upper portion of each wedge using the black decorating gel. Pipe blue and purple unicorn hair at the top of each wedge.

  10. Stretch marshmallow quarters into ear shapes and dip into pink sugar. Attach 2 ears to the edge of each slice. Pipe more hair around the ears. Place 1 candle into the hair for the horns. Keep cake refrigerated until ready to serve.

Cook's Notes:

Use melted chocolate instead of black icing gel, if preferred.

Instead of a piping bag, you can use a freezer bag with the corner cut off.

Nutrition Facts (per serving)

950 Calories
45g Fat
138g Carbs
8g Protein
Nutrition Facts
Servings Per Recipe 8
Calories 950
% Daily Value *
Total Fat 45g 57%
Saturated Fat 27g 137%
Cholesterol 153mg 51%
Sodium 762mg 33%
Total Carbohydrate 138g 50%
Dietary Fiber 4g 15%
Total Sugars 106g
Protein 8g
Vitamin C 0mg 2%
Calcium 131mg 10%
Iron 3mg 18%
Potassium 323mg 7%

* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

** Nutrient information is not available for all ingredients. Amount is based on available nutrient data.

(-) Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.

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