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Black Velvet Halloween Cake: The Ultimate Spooky & Delicious Dessert

Abby Martin
This Black Velvet Halloween Cake is the ultimate spooky-season showstopper. Made with rich black cocoa for a deep, Oreo-like flavor and no food dye, it’s naturally dark, moist, and beautifully decorated with dramatic black buttercream. Perfect for parties, gothic weddings, or whenever you’re craving a slice of something dark and delicious.
Prep Time 25 minutes
Cook Time 35 minutes
Total Time 1 hour
Course Cakes
Cuisine American
Servings 12 slices
Calories 470 kcal

Ingredients
  

  • 2 cups all-purpose flour
  • 1 2/3 cups granulated sugar
  • 2/3 cup black cocoa powder
  • 2 tsp baking soda
  • 1 tsp baking powder
  • 1/2 tsp salt
  • 1/2 cup vegetable oil
  • 2 large eggs room temperature
  • 1 1/2 tsp vanilla extract
  • 1 cup buttermilk room temperature
  • 1 cup hot coffee or water

Instructions
 

  • 1. Preheat oven to 350°F and line two 8-inch cake pans with parchment.
  • 2. In a large bowl, whisk together flour, sugar, black cocoa, baking soda, baking powder, and salt.
  • 3. Add oil, eggs, vanilla, and buttermilk. Mix until combined.
  • 4. Slowly add hot coffee while mixing on low. Beat on medium speed until smooth (2 minutes).
  • 5. Divide batter evenly into pans and bake for 32–36 minutes.
  • 6. Cool completely before frosting.
  • 7. For the buttercream: beat butter until creamy. Add powdered sugar and beat.
  • 8. Add black cocoa, milk, vanilla, and salt. Mix until smooth.
  • 9. Let buttercream darken for several hours or overnight.
  • 10. Frost and stack cake layers. Chill for 30 minutes.
  • 11. Apply a smooth finish, then decorate with Lambeth piping and sprinkles.

Notes

To make your own buttermilk, mix 1 tbsp vinegar with 1 cup milk and let sit for 10 minutes.
Black cocoa deepens in color as it rests — plan ahead for best results.
Cake layers freeze well for up to 2 months; wrap tightly.
Keyword black cocoa cake, Black velvet Halloween cake, velvet cake for Halloween