Description
This indulgent three-layer chocolate cake uses fresh garden zucchini to achieve a remarkably moist, fudgy crumb. Topped with a silky ganache-based buttercream, it is the perfect rustic centerpiece for late-summer gatherings.
Ingredients
- 2 cups all-purpose flour
- 3/4 cup natural cocoa powder
- 1 teaspoon baking soda
- 1/2 teaspoon baking powder
- 1/2 teaspoon salt
- 1 tablespoon espresso powder (optional)
- 1 1/2 cups vegetable oil
- 1 1/4 cups granulated sugar
- 1 cup packed light brown sugar
- 4 large eggs, room temperature
- 1 cup sour cream, room temperature
- 1 tablespoon vanilla extract
- 2 cups finely grated zucchini
- 1 1/2 cups semi-sweet chocolate chips
- 1/2 cup heavy cream (for frosting)
- 1 cup unsalted butter, softened
- 3 cups powdered sugar
Instructions
- Prepare the pans. Preheat oven to 350ºF, butter three 8-inch cake pans, and line the bottoms with parchment paper.
- Whisk dry ingredients. Sift flour, cocoa, baking soda, baking powder, salt, and espresso powder into a bowl and stir to combine.
- Mix wet ingredients. Whisk vegetable oil, sugars, eggs, sour cream, and vanilla until smooth, then fold in the grated zucchini.
- Combine and bake. Stir the wet mixture into the dry ingredients, fold in chocolate chips, divide into pans, and bake for 35 to 40 minutes.
- Cool the layers. Rest cakes in pans for 10 minutes before inverting onto wire racks to cool completely.
- Whip the frosting. Melt chocolate with heavy cream; beat butter and cocoa, gradually add powdered sugar and cream, then fold in the melted chocolate until fluffy.
- Assemble the cake. Stack layers with buttercream between each, then frost the sides for a rustic finish and pipe decorative dollops on top.
Notes
- Fine-grate your zucchini to ensure it melts seamlessly into the cake structure without leaving noticeable vegetable strands.
- Use room temperature eggs and sour cream to prevent the melted chocolate in the frosting from seizing or becoming grainy.
- Weigh your flour with a kitchen scale to avoid packing the cup, which can lead to a dry and dense crumb.
- Chill the final assembled cake for 30 minutes before slicing to ensure the buttercream firms up for cleaner cuts.
- Prep Time: 30 mins
- Cook Time: 40 mins
- Category: Dessert
- Method: Baking
- Cuisine: American
