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Chocolate Zucchini Sheet Cake Recipe

Chocolate cake is always a must, but this chocolate zucchini sheet cake recipe even hides veggies for you!
Prep Time20 mins
Cook Time25 mins
Total Time45 mins
Course: Dessert
Cuisine: American
Keyword: chocolate cake, Chocolate Zucchini Cake with frosting, Favorite zucchini dessert, Six sisters zucchini recipe
Servings: 24
Calories: 240kcal


  • Large Mixing Bowl
  • Medium Mixing Bowl
  • Hand mixer
  • 15x10x2 Sheet Pan
  • Non-stick Cooking Spray
  • Medium Saucepan



  • 2 cups sugar
  • 1 cup plain greek yogurt
  • 3 eggs
  • 2 1/2 cups all-purpose flour
  • 1/4 cup cocoa powder
  • 1 teaspoon baking soda
  • 1/4 teaspoon baking powder
  • 1/4 teaspoon salt
  • 1/2 cup milk
  • 2 cups shredded fresh zucchini
  • 1 Tablespoon vanilla extract


  • 1/2 cup butter or margarine
  • 2 Tablespoons cocoa powder
  • 1/4 cup milk
  • 3 1/2 cups powdered sugar
  • 1 teaspoon vanilla


  • Preheat oven to 375 degrees. Spray a 15x10x1" baking pan heavily with non-stick cooking spray.
  • In a large bowl, cream sugar and yogurt together until smooth. Add eggs, beating after adding each one.
  • In a separate bowl, sift flour, cocoa powder, baking soda, baking powder, and salt.
  • Mix dry ingredients with the sugar/yogurt mixture, and then slowly pour in the milk.
  • Fold in the zucchini and the vanilla and pour batter into the prepared baking pan.
  • Bake for 25 minutes or until a toothpick stuck in the middle of the cake comes out clean.


  • In a saucepan over medium low heat, combine the butter, cocoa, and milk.
  • Heat to boiling, stirring frequently.
  • Remove from heat and mix in the powdered sugar and vanilla until the frosting is smooth (you may have to whisk it).
  • Pour warm frosting over brownies as soon as you take them out of the oven. Let cool completely before serving


  • Shred your zucchini using a box grater


Calories: 240kcal | Carbohydrates: 46g | Protein: 4g | Fat: 5g | Saturated Fat: 3g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 1g | Trans Fat: 1g | Cholesterol: 32mg | Sodium: 125mg | Potassium: 81mg | Fiber: 1g | Sugar: 35g | Vitamin A: 186IU | Vitamin C: 2mg | Calcium: 32mg | Iron: 1mg