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


Recipe Summary

45 mins
25 mins
45 mins
1 hr 55 mins
1 9-inch layer cake


Original recipe yields 8 servings
The ingredient list now reflects the servings specified
Chocolate Cake:
Vanilla Frosting:


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

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

  • 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.

  • 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.

  • 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.

  • 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.

  • 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.

  • 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.

  • 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.

  • 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

950 calories; protein 8g 16% DV; carbohydrates 137.8g 45% DV; fat 44.6g 69% DV; cholesterol 153.2mg 51% DV; sodium 762.1mg 31% DV. Full Nutrition

Reviews (6)

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Most helpful positive review

Rating: 5 stars
i made these cake for one of my sister for there birthday she loved it Read More
8 Ratings
  • 5 star values: 8
  • 4 star values: 0
  • 3 star values: 0
  • 2 star values: 0
  • 1 star values: 0
Rating: 5 stars
i made these cake for one of my sister for there birthday she loved it Read More
Rating: 5 stars
It was easy to make Read More
Rating: 5 stars
my dather loved it Read More
Rating: 5 stars
Best cake ever!!! Read More
Rating: 5 stars
Reminds me of the chocolate cake from my youth. Deep chocolate flavor not too sweet and perfectly moist. Definitely a keeper! Read More
Rating: 5 stars
I didn t do all the decorations. I wanted a decadent dark chocolate cake that was soft and almost melt in the mouth like. This recipe took it for me. I made it for a friends birthday. She enjoyed it so much. Her kids loved it as well. They just finished the last of it today. The frosting was just perfect as well. I love this kind of cake with a side of cold milk. The only thing I would do is leave it in the oven 15 min longer and I did not use dark cocoa cuz I couldn t find it. It came out perfect either way. Read More