Chocolate Zucchini Cake Recipe

5 / 5 (1 review)

Chocolate Chip Zucchini Cake

zucchini chocolate cake

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This Chocolate Zucchini Cake Recipe is outrageous! It is incredibly moist and has a triple chocolate combination. Chocolate cake, chocolate chips and chocolate ganache on top! The chocolate ganache seeps into the chocolate zucchini cake for added goodness! If you have zucchini from your garden you have got to try this cake!

Cooks Tips:

  • If you have a large zucchini with lots of large seeds you will want to use a Zucchini corer to remove the seeds.
  • For fast shredding of my zucchini I used my Cuisinart Food Processor.
  • If you do not have sour cream, yogurt or buttermilk on hand you can add 1/2 Tablespoon of vinegar to 1/2 cup of milk to substitute the buttermilk.
  • This is my favorite tool for stirring the buttermilk on the stove to keep it from scorching. Sauce Wisk.

Recipe adapted from King Arthur Flour and Parsley Sage Sweet.

Find more of our Best Zucchini Recipes

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Chocolate Zucchini Cake Recipe

5 / 5 (1 review)
Prep Time: 10 mins | Cook Time: 35-40 mins
Yield: 1 9x13 pan | Serves: 24 servings


  • 1/2 cup (1 stick) butter
  • 1/2 cup vegetable oil (or unsweetened apple sauce)
  • 1 2/3 cups granulated sugar
  • 1 teaspoon vanilla
  • 1 teaspoon baking soda
  • 1/2 teaspoon baking powder
  • 1/2 teaspoon salt
  • 2 large eggs
  • 1/2 cup buttermilk, yogurt or sour cream
  • 2 1/2 cups Flour
  • 3/4 cup cocoa powder
  • 2 1/2 to 3 cups shredded zucchini (about one 10-inch zucchini)
  • 1 cup chocolate chips
  • Chocolate Ganache Topping:

  • 3/4 cup heavy cream
  • 1 cup chopped chocolate (semi-sweet or milk)


  1. Lightly coat a 9″ x 13″ pan with baking spray.
  2. Preheat the oven to 325°F.
  3. In a large mixing bowl, cream together the butter, oil, sugar, vanilla, baking soda, baking powder, and salt.
  4. Beat in the eggs, one at a time.
  5. Stir in the sour cream, yogurt or buttermilk alternately with the flour, starting and ending with the flour.
  6. Stir in the cocoa mixing until smooth.
  7. Finally, fold in the zucchini and 1 cup of chocolate chips.
  8. Pour the batter into the prepared pan and smooth out evenly with a spatula.
  9. Bake the cake for 35 – 40 minutes or until a cake tester inserted in the center comes out clean.
  10. Remove the cake from the oven and cool on a rack.
  11. Chocolate Ganache Frosting Instructions:

  12. Heat heavy cream in a saucepan over medium heat until simmering. Stir constantly to avoid scorching.
  13. Remove from heat and pour over the chopped chocolate chips.
  14. Wait 3-5 minutes then stir to combine until smooth.
  15. Ganache thickens as it cools.
  16. While warm pour over cake and smooth with spatula.
  17. Allow frosting to set for about 30 minutes before serving.

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