Best Chocolate Layer Cake

Get ready for the most indulgent chocolate experience of your life! This triple-layer chocolate cake is pure dessert heaven, with a perfectly moist crumb, rich chocolate buttercream, and a glossy ganache drip that’ll make everyone’s jaws drop.

What makes this cake truly special is the combination of hot coffee and buttermilk in the batter – these secret ingredients enhance the chocolate flavor while keeping each layer incredibly tender. Plus, the three-layer design creates the perfect ratio of cake to frosting in every single bite.

Ingredients

For the Cake:

• 2 3/4 cups (330g) all-purpose flour
• 3 cups (596g) granulated sugar
• 1 cup (84g) natural unsweetened cocoa powder
• 1 tablespoon baking soda
• 1 1/2 teaspoons baking powder
• 1 1/2 teaspoons salt
• 3 large eggs, room temperature
• 1 1/2 cups (341g) buttermilk
• 1 1/2 cups (341g) hot coffee
• 3/4 cup (149g) vegetable oil
• 1 tablespoon vanilla extract

For the Buttercream Frosting:

• 1 1/2 cups (339g) unsalted butter, room temperature
• 1 cup (84g) natural unsweetened cocoa powder
• 5 cups (568g) confectioners’ sugar
• 1/2 cup (113g) heavy cream
• 2 teaspoons vanilla extract
• 1/2 teaspoon salt

For the Ganache:

• 7 ounces (198g) dark chocolate, chopped
• 2/3 cup (151g) heavy cream
• Chocolate sprinkles, for decorating

Steps

1. Preheat oven to 350°F (175°C). Prepare three 8-inch round cake pans by greasing, flouring, and lining with parchment paper. Pro tip: Use a light coating of baking spray between parchment layers for easy release.
2. Mix cake batter: In a large bowl, combine dry ingredients thoroughly. The cocoa powder tends to clump – sift it if needed. In a separate bowl, whisk wet ingredients until fully incorporated – the coffee should be hot (180-190°F/82-88°C) to bloom the cocoa flavor. Combine wet and dry ingredients on low speed for 2 minutes until smooth. The batter will be thin – this is correct!
3. Bake cakes at 350°F (175°C) for 28-32 minutes. Check at 25 minutes – a toothpick should come out with a few moist crumbs, not wet batter. Cool in pans for 20 minutes exactly (too long and they’ll stick).
4. Make frosting: Beat butter and cocoa powder for 2-3 minutes until creamy. Gradually add sugar and cream, alternating 1 cup sugar with 1 tablespoon cream. Mix each addition on high for 1 minute. Final texture should be spreadable but hold peaks – if too stiff, add cream 1 tablespoon at a time.
5. Assemble cake: Level layers if domed. Place first layer on cake board, spread 1 cup frosting evenly to edges. Repeat with second layer. Top layer goes upside down for flat top. Apply thin crumb coat, chill 30 minutes, then final coat. Temperature check: frosting should be 65-70°F (18-21°C) for best spreading.
6. Make ganache: Heat cream to just barely boiling (180°F/82°C). Pour over chocolate, let stand 2 minutes, then whisk from center outward. Cool until thickened but pourable (10-15 minutes, or 85-90°F/29-32°C). Apply drips around edge, then fill center. Chill 30 minutes minimum before serving.