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Chocolate Lemon Zucchini Cake

5 from 16 votes
Moist chocolate zucchini cake layers with lemon cream cheese frosting.
Servings 1 2-layer, 8-inch cake
Prep Time 1 hour
Cook Time 25 minutes
Inactive Time 20 minutes
Total Time 1 hour 45 minutes

Ingredients

For the Cake

  • 2 1/4 cup (270 g) all-purpose flour
  • 1/2 cup (109 g) unsweetened cocoa powder
  • 1 teaspoon (4 g) baking soda
  • 1 teaspoon (6 g) salt
  • 2 cups (400 g) granulated sugar
  • 1/2 cup (113 g) unsalted butter, at room temperature
  • 1/2 cup (109 g) vegetable oil
  • 2 large eggs, at room temperature
  • 1 teaspoon (4.2 g) pure vanilla extract
  • 1/2 cup (120 g) buttermilk, room temperature
  • 2 cups (300 g) grated unpeeled zucchini, about 2 1/2 medium
  • 1 teaspoon lemon zest

For the Buttercream

  • 1 cup (226 g) unsalted butter, slightly chilled
  • 4 oz. cream cheese, slightly chilled
  • 5 cups (625 g) powdered sugar, measured and then sifted
  • 1 teaspoon (4.2 g) lemon extract
  • Pinch of salt

Instructions

For the Cake

  • Preheat your oven to 325 degrees F. Spray your two 8-inch round cake pans, line with parchment paper and spray the parchment. Set aside.
  • Whisk together the flour, cocoa powder, baking soda, and salt into a medium bowl. Set aside.
  • In a bowl of a stand mixer fitted with a paddle attachment, beat the sugar, butter, and oil until well blended.
  • Add the eggs, one at a time, beating for about 30 seconds after each addition. Beat in the vanilla.
  • Mix in the dry ingredients alternately with the buttermilk, starting and ending with the dry ingredients.
  • Mix in the grated zucchini and lemon zest.
  • Pour the batter evenly into the two cake pans and bake for about 35-40 minutes.
  • Cool completely in pan. 

For the Buttercream

  • In the bowl of a stand mixer fitted with a paddle attachment, beat the butter and cream cheese on medium-high speed until smooth, about 2 to 3 minutes.
  • With the mixer on low speed, gradually add the powdered sugar, followed by the lemon extract and salt.
  • Turn the mixer to medium speed and beat for about 5 minutes, until light in color.
Course: Dessert
Cuisine: Cake
Keyword: chocolate, Chocolate Cake, Chocolate lemon zucchini cake, cream cheese buttercream, Lemon, Zucchini