Black Velvet Halloween Birthday Cake
This black velvet Halloween birthday cake is my go-to for anyone born in October. It is dramatic, deeply chocolatey, and swirled with tangy orange cream cheese frosting that tastes like a creamsicle in cake form.
The cake layers are shockingly dark thanks to black cocoa, and the whole thing comes together with just one bowl for the batter. No gel food coloring needed.
Why This Cake Works for Halloween Birthdays
The black cocoa gives the cake an Oreo-like depth that stands up to the bright citrus frosting. Because it is baked in two 8-inch pans, it is easy to stack and decorate without stress.
I love that the natural black color comes entirely from cocoa, so there is no bitter aftertaste from food dye. The orange cream cheese frosting is smooth, not too sweet, and makes the whole room smell like a bakery.
Ingredients
- 2 cups all-purpose flour: unbleached works best
- 3/4 cup black cocoa powder: Dutch-processed, like King Arthur Black Cocoa
- 1 1/2 tsp baking powder
- 1 tsp baking soda
- 1/2 tsp fine sea salt
- 1 1/2 cups granulated sugar
- 1/3 cup vegetable oil
- 2 large eggs: at room temperature
- 1 cup buttermilk: at room temperature
- 1 tsp vanilla extract
- 1 cup hot black coffee: or hot water, just off the boil
- 1/2 cup unsalted butter: very soft, for the frosting
- 8 oz cream cheese: full-fat block, softened
- 3 cups powdered sugar: sifted
- 2 tbsp orange zest: from about 2 large oranges
- 1 tbsp orange juice: fresh squeezed
- pinch salt
- candy eyes and black sanding sugar: for decorating
Variations / Substitutions
- Gluten-free: swap the all-purpose flour with a 1:1 gluten-free baking blend that contains xanthan gum
- Dairy-free: use solid coconut oil for the butter, vegan cream cheese, and replace the buttermilk with 1 cup almond milk plus 1 tbsp lemon juice
- Spicier: add 1 tsp cinnamon or a pinch of cayenne to the dry ingredients
- Chocolate frosting: replace the orange zest and juice with 1 tbsp vanilla and 2 tbsp heavy cream for an all-black buttercream
- For a simpler sheet cake version, try my One-Bowl Chocolate Devil’s Food Cake.
How to Make Black Velvet Halloween Birthday Cake
Step 1: Mix the Batter
Place a rack in the center of your oven and preheat it to 350°F (175°C). Grease two 8-inch round cake pans and line the bottoms with parchment. In a large bowl, whisk the 2 cups flour, 3/4 cup black cocoa, baking powder, baking soda, salt, and 1 1/2 cups sugar until evenly blended.
Whisk in the 1/3 cup oil, eggs, buttermilk, and vanilla until the batter is thick and glossy, about 1 minute. Pour in the 1 cup hot coffee slowly while whisking. The batter will be quite thin, almost like chocolate syrup. That looseness is exactly what keeps the cake tender.
Step 2: Bake the Cake Layers
Divide the batter evenly between the pans, then tap each pan on the counter twice to pop any large air bubbles. Slide them into the oven and bake for 30 to 35 minutes. The layers are done when a toothpick poked into the center comes out with a few moist crumbs, not wet batter.
Cool the pans on a wire rack for 10 minutes, then turn the layers out onto the rack to cool completely. Do not frost warm cakes, or the frosting will slide right off.
Step 3: Whip Up the Orange Frosting
In a stand mixer or with a hand mixer, beat the 1/2 cup butter and cream cheese on medium speed until completely smooth, about 2 minutes. Scrape down the bowl, then add the orange zest, orange juice, vanilla, and pinch of salt. Beat again just to combine.
With the mixer on low, slowly add the 3 cups powdered sugar. Once the sugar is mostly absorbed, crank the speed to medium-high and whip for another 2 minutes until the frosting is light and fluffy. If it feels too soft to hold a swirl, chill it for 15 minutes before assembling.
Step 4: Assemble and Spookify the Cake
Place one completely cooled layer on a cake stand or plate and spread a generous cup of frosting on top. Set the second layer on top, flat-side up, and cover the entire cake with a thin crumb coat of frosting. Pop it in the fridge for 20 minutes so that coat sets.
Spread the remaining frosting over the chilled cake, using an offset spatula to create swoops and swirls. Press black sanding sugar around the bottom edge and dot the whole cake with candy eyes. Serve within an hour so the frosting stays firm and the eyes stay bright.
Tips for a Showstopping Halloween Cake
- Black cocoa is the only swap that gives this dark a color. Regular Dutch-processed cocoa will taste good but turn out brown, not black.
- If your kitchen is warm, set the frosted cake on a chilled ice pack while decorating to keep everything from sliding.
- Bake the layers the night before, wrap them tightly, and refrigerate. Frost right before the party so the cake looks fresh.
- To make the eyes really pop, pipe tiny dots of dark melted chocolate as pupils onto each candy eye before sticking them on the cake.
Bake times for different pan sizes:
| Pan Size | Time | Oven Temp |
|---|---|---|
| 9-inch rounds | 25–30 mins | 350°F (175°C) |
| 9×13-inch sheet pan | 28–33 mins | 350°F (175°C) |
| 24 cupcakes | 18–20 mins | 350°F (175°C) |
Storing Leftover Cake
- Refrigerate: cover any leftover cake loosely and store it in the fridge for up to 4 days. Bring slices to room temperature for about 20 minutes before eating.
- Freeze unfrosted layers: wrap cooled layers in plastic and foil, then freeze for up to 3 months. Thaw in the fridge overnight before frosting.
Frequently Asked Questions
Can I bake this as a single-layer cake?
Yes. Use a 9-inch springform pan and bake for 40 to 45 minutes, checking the center with a toothpick. The taller layer may take longer to set.
How do I get clean cake slices?
Dip a large chef’s knife in hot water and wipe it dry between each cut. This stops the dark crumbs from smearing into the orange frosting.
Why did my cake sink in the middle?
A sunken center usually means the oven door was opened too early, or the cakes were underbaked. Wait until at least 25 minutes have passed before checking, and trust the toothpick test.
Can I color the frosting black instead of orange?
You can, but black gel coloring can give the frosting a bitter taste. A better route is to frost the whole cake in the dark crumb coat and then pipe a ring of orange frosting around the top and bottom edges.
Black Velvet Halloween Birthday Cake Recipe
Ingredients
Method
- Preheat oven to 350°F (175°C). Grease two 8-inch round cake pans and line with parchment. Whisk flour, black cocoa, baking powder, baking soda, salt, and sugar in a large bowl. Whisk in oil, eggs, buttermilk, and vanilla until smooth, then whisk in hot coffee.
- Divide batter between pans. Bake 30 to 35 minutes until a toothpick comes out with moist crumbs. Cool in pans 10 minutes, then turn out onto a rack to cool completely.
- Beat butter and cream cheese until very smooth. Mix in orange zest, orange juice, vanilla, and a pinch of salt. Slowly add powdered sugar, then whip on medium-high for 2 minutes until fluffy.
- Place one cooled layer on a plate, spread 1 cup frosting on top, then add the second layer. Crumb coat the whole cake and chill 20 minutes. Spread remaining frosting over the cake, decorate with black sanding sugar and candy eyes, and serve.
