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Decadent chocolate buttermilk cake with a rich ganache topping, sliced to show its moist interior.

How To Make The Ultimate Decadent Chocolate Buttermilk Cake


  • Author: EMY
  • Total Time: 55 minutes
  • Yield: 12 servings 1x
  • Diet: Vegetarian

Description

This Decadent Chocolate Buttermilk Cake is rich, moist, and packed with deep chocolate flavor. The buttermilk ensures a soft, tender crumb, while the combination of cocoa powder and hot coffee enhances its intense chocolatey goodness. Perfect for birthdays, celebrations, or any time you crave indulgence!


Ingredients

Scale

Dry Ingredients:

  • 2 cups (250g) all-purpose flour
  • ¾ cup (75g) Dutch-processed cocoa powder
  • 2 cups (400g) granulated sugar
  • 1 ½ teaspoons baking soda
  • 1 teaspoon baking powder
  • ½ teaspoon salt

Wet Ingredients:

  • 1 cup (240ml) buttermilk
  • ½ cup (120ml) vegetable oil
  • ½ cup (115g) unsalted butter, melted
  • 2 large eggs
  • 1 tablespoon vanilla extract
  • 1 cup (240ml) hot coffee (or hot water)

Optional Add-Ins:

  • 1 teaspoon espresso powder (for deeper chocolate flavor)
  • 1 cup (170g) dark chocolate chips (for extra richness)

For the Chocolate Ganache Frosting:

  • 1 cup (240ml) heavy cream
  • 8 oz (225g) dark chocolate, chopped
  • 1 tablespoon unsalted butter

Instructions

Step 1: Prepare the Baking Pans

  1. Preheat oven to 350°F (175°C).
  2. Grease and line two 9-inch round cake pans with parchment paper.

Step 2: Mix the Dry Ingredients

  1. In a large bowl, whisk together the flour, cocoa powder, sugar, baking soda, baking powder, and salt until well combined.

Step 3: Mix the Wet Ingredients

  1. In another bowl, whisk together the buttermilk, vegetable oil, melted butter, eggs, and vanilla extract until smooth.

Step 4: Combine Wet and Dry Mixtures

  1. Gradually add the wet ingredients to the dry mixture, stirring gently until just combined.

Step 5: Add Hot Coffee

  1. Slowly pour in the hot coffee while stirring. This enhances the chocolate flavor and keeps the cake moist.

Step 6: Bake the Cake

  1. Divide the batter evenly between the two cake pans.
  2. Bake for 30-35 minutes, or until a toothpick inserted in the center comes out clean.
  3. Let the cakes cool in the pans for 10 minutes, then transfer to a wire rack to cool completely.

Step 7: Prepare the Chocolate Ganache Frosting

  1. Heat the heavy cream in a saucepan until steaming (not boiling).
  2. Pour over the chopped dark chocolate and let sit for 5 minutes.
  3. Whisk until smooth, then stir in the butter for a glossy finish.

Step 8: Frost the Cake

  1. Once the cakes are completely cool, spread ganache over the first layer, place the second layer on top, and coat the entire cake with the remaining ganache.
  2. Let it set slightly before slicing and serving.

Notes

  • No buttermilk? Substitute by mixing 1 cup of milk with 1 tbsp of vinegar or lemon juice and let it sit for 10 minutes.
  • Want a deeper chocolate taste? Add espresso powder to enhance the flavor.
  • For extra moisture, brush the cake layers with simple syrup before frosting.
  • Prep Time: 20 minutes
  • Cook Time: 35 minutes
  • Category: Dessert
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 slice (1/12 of cake)
  • Calories: 450 kcal
  • Sugar: 45g
  • Sodium: 280mg
  • Fat: 22g
  • Saturated Fat: 12g
  • Unsaturated Fat: 8g
  • Trans Fat: 0g
  • Carbohydrates: 60g
  • Fiber: 4g
  • Protein: 6g
  • Cholesterol: 65mg