Description
Magical, moist, and packed with flavor, this Unicorn Purple Velvet Cake is the ultimate dessert for celebrations or when you need a little sparkle in your life. With rich purple layers, dreamy rainbow buttercream, and a sprinkle of fun, this cake will delight kids and adults alike!
Ingredients
Scale
For the Cake:
- 2 ½ cups all-purpose flour, sifted
- 2 cups granulated sugar
- 2 tbsp unsweetened cocoa powder
- 1 tsp baking soda
- ½ tsp salt
- 1 cup buttermilk, room temperature
- 1 cup vegetable oil
- 2 large eggs, room temperature
- 1 tsp white vinegar
- 2 tsp vanilla extract
- Purple gel food coloring
For the Rainbow Buttercream Frosting:
- 1 cup unsalted butter, softened
- 4 cups powdered sugar, sifted
- 2–3 tbsp heavy cream
- 1 tsp vanilla extract
- Gel food coloring (pink, blue, purple, yellow)
- Sprinkles
Instructions
- Prepare the Cake Batter:
- Preheat your oven to 350°F (175°C). Grease and line three 8-inch cake pans.
- In a large mixing bowl, whisk together the flour, sugar, cocoa powder, baking soda, and salt.
- In a separate bowl, whisk together the buttermilk, vegetable oil, eggs, vinegar, vanilla extract, and purple gel food coloring until smooth.
- Gradually add the wet ingredients to the dry ingredients, mixing until just combined. Do not overmix.
- Bake the Cake Layers:
- Divide the batter evenly between the prepared cake pans.
- Bake for 25-30 minutes, or until a toothpick inserted in the center comes out clean.
- Cool the cakes in the pans for 10 minutes before transferring them to a wire rack to cool completely.
- Make the Rainbow Buttercream Frosting:
- In a stand mixer or with a hand mixer, beat the butter until creamy.
- Gradually add the powdered sugar, one cup at a time, alternating with heavy cream until the frosting reaches your desired consistency.
- Mix in the vanilla extract.
- Divide the frosting into four bowls, and color each with pink, blue, purple, and yellow gel food coloring.
- Assemble the Cake:
- Place one cake layer on a serving platter and spread a generous amount of frosting on top. Repeat with the remaining layers.
- Spread a light crumb coat over the entire cake and refrigerate for 15 minutes.
- Use a piping bag with a star tip to pipe rainbow swirls on the top and sides. Decorate with sprinkles for the finishing touch.
- Serve and Enjoy:
- Chill the completed cake for 30 minutes before slicing to allow the frosting to set. Slice, serve, and watch the magic happen!
Notes
- The cake layers can be baked a day in advance and stored, wrapped tightly in plastic wrap, at room temperature.
- Frosted cake can be stored in the fridge for up to 5 days or frozen for up to 3 months.
- For even cake layers, use a serrated knife to level the tops before assembling.
- Prep Time: 20 minutes
- Cook Time: 30 minutes