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Decadent Chocolate Cake Recipe Easy Moist Buttercream Delight

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A moist and rich chocolate cake with a silky buttercream frosting, perfect for birthdays, celebrations, or any indulgent occasion. This recipe balances deep chocolate flavor with a tender crumb and creamy frosting.

Ingredients

Scale
  • 2 ½ cups (320 g) all-purpose flour
  • ¾ cup (75 g) unsweetened cocoa powder (preferably Dutch-processed)
  • 1 ½ teaspoons baking soda
  • ½ teaspoon salt
  • 2 cups (400 g) granulated sugar
  • 1 cup (240 ml) buttermilk (or 1 cup milk + 1 tbsp lemon juice, let sit 5 minutes)
  • ½ cup (120 ml) vegetable oil
  • 2 large eggs, room temperature
  • 2 teaspoons pure vanilla extract
  • 1 cup (240 ml) boiling water
  • 4 oz (115 g) bittersweet or semisweet chocolate, chopped and melted
  • For the Buttercream Frosting:
  • 1 cup (227 g) unsalted butter, softened
  • 3 ½ cups (440 g) powdered sugar, sifted
  • 2–3 tablespoons (30–45 ml) heavy cream
  • 1 ½ teaspoons pure vanilla extract
  • Pinch of salt

Instructions

  1. Preheat oven to 350°F (175°C). Grease two 9-inch round cake pans with butter and dust with flour or line with parchment paper.
  2. In a large bowl, sift together flour, cocoa powder, baking soda, and salt. Whisk to combine.
  3. In another bowl, whisk granulated sugar, buttermilk, vegetable oil, eggs, and vanilla extract until smooth and light, about 2 minutes.
  4. Melt chopped chocolate in a heatproof bowl over simmering water or microwave in 20-second bursts until smooth and slightly cooled.
  5. Slowly add the wet mixture into the dry ingredients, mixing gently until just combined. Avoid overmixing.
  6. Slowly pour boiling water into the batter and mix carefully; then fold in the melted chocolate until evenly incorporated.
  7. Divide batter evenly between prepared pans. Tap pans gently to release air bubbles.
  8. Bake for 30–35 minutes or until a toothpick inserted in the center comes out with a few moist crumbs. Start checking at 30 minutes.
  9. Cool cakes in pans for 15 minutes, then invert onto cooling racks and cool completely, about 1 hour.
  10. To make buttercream, beat softened butter on medium speed until creamy, about 2 minutes.
  11. Gradually add powdered sugar on low speed to avoid sugar clouds.
  12. Add heavy cream, vanilla extract, and salt; beat on high until light and fluffy, 3–5 minutes. Adjust cream or sugar for consistency.
  13. Place one cake layer on a serving plate, spread buttercream evenly over the top.
  14. Place second layer on top and frost the top and sides smoothly. Decorate as desired.

Notes

Use Dutch-processed cocoa powder for richer flavor. Avoid overmixing batter to keep cake moist and tender. Let cakes cool completely before frosting to prevent melting buttercream. For gluten-free, substitute flour with a 1:1 gluten-free blend. For dairy-free or vegan, use plant-based substitutes as noted. Warm butter slightly before beating for fluffier buttercream. Sift powdered sugar to avoid lumps.

Nutrition

Keywords: chocolate cake, buttercream frosting, moist chocolate cake, easy chocolate cake, decadent dessert, birthday cake, homemade cake

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