This black velvet cake is a deep, tender chocolate layer cake that comes together in two bowls and bakes in under an hour.
Boiling water blooms the cocoa and gives the crumb a soft, moist feel, while buttermilk keeps it tender. Frost the layers with ganache or cream cheese frosting, or serve slices plain with whipped cream.
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Why This Black Velvet Cake Recipe Works
Hot water is the secret to the deep flavor. Stirring boiling water into the batter dissolves the cocoa and sugar, which brings out a rich chocolate taste and a thin batter that bakes up soft.
Oil keeps the layers moist for days. Unlike butter, oil stays liquid at room temperature, so slices feel tender even after a day on the counter. Buttermilk adds gentle tang and reacts with the baking soda for lift.
The method is simple. You whisk the dry ingredients, whisk the wet ingredients, combine them, and thin the batter with hot water. There is no creaming, no mixer, and no special tools, which makes it a reliable choice for beginner bakers.
Ingredients for Black Velvet Cake
- 1 1/2 cups all purpose flour
- 1 cup granulated sugar
- 1/2 cup unsweetened cocoa powder
- 1 teaspoon baking soda
- 1/2 teaspoon kosher salt
- 1 cup buttermilk, at room temperature
- 1/2 cup vegetable oil
- 2 large eggs, at room temperature
- 1 teaspoon vanilla extract
- 1 cup boiling water
All purpose flour. Gives the cake its structure. Sift it with the cocoa so the dry mix has no lumps.
Cocoa powder. Unsweetened natural cocoa gives the dark color and deep flavor. Dutch process cocoa also works.
Buttermilk. Adds tang and tenderness and activates the baking soda. Regular milk with a splash of vinegar works in a pinch.
Vegetable oil. Keeps the crumb moist and soft. Use a neutral oil such as canola.
Boiling water. Dissolves the cocoa and thins the batter. Pour it in slowly while stirring.
How to Make Black Velvet Cake
1. Prepare the pans Heat the oven to 350 degrees F. Grease two 9 inch round cake pans, line the bottoms with parchment, and dust the sides with flour or cocoa.
2. Mix the dry ingredients Sift the flour, sugar, cocoa, baking soda, and salt into a large bowl so there are no cocoa lumps.
3. Whisk the wet ingredients In a second bowl, whisk the buttermilk, oil, eggs, and vanilla until smooth, then pour it into the dry mix and stir until just combined.
4. Add the boiling water Pour in the boiling water slowly while stirring. The batter will be very thin, and that is exactly right.
5. Fill the pans Divide the batter evenly between the two pans and tap each pan on the counter to release air bubbles.
6. Bake the layers Bake for 30 to 35 minutes, until a toothpick inserted in the center comes out clean and the tops spring back.
7. Cool the layers Cool in the pans for 10 minutes, then turn out onto a wire rack and cool completely before frosting.
How to Serve Black Velvet Cake
Frost the cooled layers with a rich chocolate buttercream or pour silky chocolate ganache over the top for a glossy finish. For a lighter plate, pair a slice with dark chocolate mousse or set it beside lemon layer cake on a dessert table. A cup of coffee or a glass of cold milk is all it needs.
How to Store and Reheat Black Velvet Cake
Store the unfrosted cake covered at room temperature for up to 3 days. If you frost it with cream cheese frosting, refrigerate it for up to 4 days and let slices sit out for 20 minutes before serving. Wrap cooled unfrosted layers tightly and freeze for up to 3 months, then thaw overnight in the refrigerator.
Tips and Variations for Black Velvet Cake
Measure flour carefully. Spoon the flour into the cup and level it off, since packed flour makes a dry cake.
Use fresh baking soda. Old soda loses its lift, so replace it if the box has been open for six months.
Do not skip the sifting. Cocoa clumps easily, and sifting keeps the batter smooth.
Use room temperature eggs. Eggs and buttermilk at room temperature blend more evenly into the batter.
Skip the raw batter. Do not taste the batter, since it contains raw eggs and raw flour.
Check for doneness early. Every oven runs differently, so start testing at 28 minutes.
Flag the allergens. The cake contains wheat, eggs, and dairy, so label it for guests with allergies.
Know your sources. For general guidance on handling raw eggs and keeping foods at safe temperatures, see the Texas AgriLife Extension food safety guide.
Frequently Asked Questions About Black Velvet Cake
Can I make black velvet cake ahead of time?
Yes. Bake and cool the layers a day ahead, wrap them tightly, and frost on the day you serve. The crumb stays moist thanks to the oil.
What makes black velvet cake so dark?
Cocoa powder and the boiling water. Hot water deepens the color and flavor of the cocoa, and both contribute to the dark crumb.
Can I bake black velvet cake in a 9×13 pan?
Yes. A greased 9×13 pan works and bakes in about 25 to 30 minutes. The cake will be thinner, so start checking early.
Which milk can replace buttermilk?
Stir 1 tablespoon of lemon juice into 1 cup of whole milk, rest it for 5 minutes, and use it in place of buttermilk.
Why is my batter so thin?
The boiling water thins it on purpose. A thin batter bakes into a soft, moist crumb, so do not add extra flour.
Black Velvet Cake
Equipment
- Two 9 inch round cake pans
- Large mixing bowl
- Whisk
- Sifter
- Wire rack
Ingredients
Main Ingredients
- 1 ½ cup all purpose flour
- 1 cup granulated sugar
- ½ cup unsweetened cocoa powder sifted
- 1 tsp baking soda
- ½ tsp kosher salt
- 1 cup buttermilk at room temperature
- ½ cup vegetable oil
- 2 large eggs at room temperature
- 1 tsp vanilla extract
- 1 cup boiling water
Instructions
Cooking
- Prep the pans. Set the oven to 350 degrees F, then grease and flour two 9 inch round pans.
- Combine the dry mix. Sift the flour, sugar, cocoa, baking soda, and salt together in a large bowl.
- Make the batter. Whisk the buttermilk, oil, eggs, and vanilla in a second bowl, fold it into the dry mix until just combined, then stir in the boiling water until smooth.
- Bake. Split the batter between the pans and bake for 30 to 35 minutes, until a toothpick comes out clean.
- Cool. Rest the layers in the pans for 10 minutes, then cool completely on a wire rack before frosting or serving.
