Black Forest Cake is a classic German dessert built from layers of chocolate sponge, whipped cream, and tart cherries, finished with chocolate shavings on top. The cherries are typically soaked in kirsch, which balances the richness of the cake. Plan on about 2 hours from start to finish, including cooling time.
Preheat your oven to 350°F (175°C). Grease and line two 9-inch cake pans with parchment paper.
In a mixing bowl, sift together the flour, cocoa powder, baking powder, baking soda, and salt. Set aside.
In another large bowl, beat the sugar, buttermilk, oil, eggs, and vanilla extract until well combined. Gradually add the dry ingredients, mixing until smooth. Stir in the boiling water until evenly mixed. The batter will be thin.
Divide the batter equally between the prepared pans. Bake for 30-35 minutes or until a toothpick inserted into the center comes out clean. Allow to cool in the pans for 10 minutes, then transfer to a wire rack to cool completely.
For the filling, beat the heavy cream, powdered sugar, and vanilla extract until stiff peaks form. Set aside.
Once the cakes have cooled, slice each cake layer in half horizontally to create four layers. Drizzle each layer with kirsch.
Assemble the cake by placing one layer on a serving plate. Spread with whipped cream and scatter cherries over it. Repeat with remaining layers. Frost the top and sides with the remaining cream.
Garnish with chocolate shavings and whole cherries. Refrigerate for at least 2 hours before serving.
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Notes
To enhance the cherry flavor, consider doubling the cherry syrup or using cherry jam as an additional layer.
For a non-alcoholic version, omit kirsch and use cherry juice instead.