Ingredients
Cake
- 1/2 cup unsalted butter (softened)
- 1/2 cup vegetable oil
- 1 3/4 cups granulated sugar
- 1 teaspoon vanilla bean paste
- 1 teaspoon baking soda
- 1/2 teaspoon baking powder
- 1/2 teaspoon salt
- 2 large eggs
- 1/2 cup sour cream
- 2 1/2 cups all-purpose flour
- 3/4 cup Dutch-process cocoa powder
- 2 1/2 cups shredded zucchini
- 2/3 cup chocolate chips
Ganache
- 3/4 cup heavy cream
- 10 ounces semi-sweet chocolate chips
Instructions
- Preheat Oven and Prepare Pan: Preheat your oven to 325°F and lightly grease a 9 x 13-inch baking pan to prevent the cake from sticking.
- Cream Butter and Sugar: In a large mixing bowl, combine the softened butter, vegetable oil, granulated sugar, vanilla bean paste, baking soda, baking powder, and salt. Mix until well incorporated and creamy.
- Add Eggs and Sour Cream: Beat in the eggs one at a time. Then alternately add sour cream and flour, mixing gently after each addition to maintain a smooth batter.
- Incorporate Cocoa and Zucchini: Stir in the Dutch-process cocoa powder until the batter is uniform, then fold in the shredded zucchini and 2/3 cup chocolate chips carefully. The batter will be thick at this point.
- Bake the Cake: Spread the thick batter evenly in the prepared pan. Bake for 30 to 35 minutes, or until the top springs back lightly when touched. Remove from oven and place on a wire rack to cool completely.
- Prepare Ganache: Heat the heavy cream in a saucepan over medium heat until it just begins to simmer. Remove from heat immediately to avoid boiling.
- Combine Cream and Chocolate: Pour the hot cream over the 10 ounces of semi-sweet chocolate chips in a bowl. Whisk continuously to blend until smooth and glossy, allowing a few minutes for the ganache to fully come together.
- Frost the Cake: Once the ganache has cooled to a slightly warm and pourable consistency, pour it evenly over the cooled cake. Use an offset spatula to smooth the frosting surface.
- Set Ganache: Let the ganache set at room temperature for about 30 minutes before slicing and serving to allow it to firm up nicely.
Notes
- Shredded zucchini adds moisture and texture but is subtle in flavor, making the cake rich without being vegetal.
- Be careful not to overmix the batter once the flour is added to keep the cake tender.
- Using Dutch-process cocoa provides a smooth, mellow chocolate flavor in the cake.
- The ganache should be poured while warm for easy spreading but not hot to prevent melting the cake’s surface.
- Store leftovers in an airtight container at room temperature for up to 3 days or refrigerate for up to a week.
- Prep Time: 20 minutes
- Cook Time: 35 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American