Ingredients:
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2 cups all-purpose flour
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1 cup granulated sugar
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1 cup buttermilk (room temperature)
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1/2 cup unsalted butter (softened)
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1/4 cup vegetable oil
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2 large eggs (room temperature)
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2 tbsp black cocoa powder
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1 tbsp unsweetened cocoa powder
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1 tsp baking powder
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1/2 tsp baking soda
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1/2 tsp salt
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1 tbsp white vinegar
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1 tsp vanilla extract
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Black food coloring (gel or paste – amount depends on desired depth of black)
Instructions:
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Preheat oven to 350°F (175°C). Grease and flour two 8-inch round cake pans or line with parchment paper.
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Mix dry ingredients:
In a medium bowl, whisk together the flour, both cocoa powders, baking powder, baking soda, and salt. -
Cream butter and sugar:
In a large mixing bowl, beat the butter and sugar together on medium speed until light and fluffy (about 2–3 minutes). -
Add eggs and oil:
Beat in the eggs, one at a time, then mix in the vegetable oil until well combined. -
Combine wet ingredients:
In a separate bowl or measuring cup, stir together the buttermilk, vinegar, vanilla extract, and black food coloring. -
Alternate adding:
Add the dry ingredients to the butter mixture in 3 additions, alternating with the buttermilk mixture (starting and ending with dry). Mix just until combined—do not overmix. -
Bake:
Divide batter evenly between the prepared pans. Bake for 28–32 minutes or until a toothpick inserted in the center comes out clean. -
Cool:
Let the cakes cool in the pans for 10 minutes, then remove and transfer to a wire rack to cool completely.
Serving Suggestions:
Frost with cream cheese frosting, vanilla buttercream, or dark chocolate ganache for a dramatic contrast.