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Three freshly baked layers of Triple Chocolate Zucchini Cake cooling on wire racks

Triple Chocolate Zucchini Cake


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5 from 5 reviews

  • Author: Jasmine Padda
  • Total Time: 1 hour 10 mins
  • Yield: 12 servings

Description

This indulgent three-layer cake features a rich cocoa crumb enriched with freshly grated zucchini for an incredibly moist texture. Finished with a decadent chocolate ganache buttercream, it is the perfect balance of deep flavor and velvety softness.


Ingredients

  • 2 cups all-purpose flour
  • 1 cup unsweetened natural cocoa powder
  • 1 teaspoon baking soda
  • 1 teaspoon baking powder
  • 1/2 teaspoon salt
  • 1 tablespoon espresso powder
  • 1 cup vegetable oil
  • 1 cup granulated sugar
  • 1 cup light brown sugar
  • 3 large eggs
  • 1 cup sour cream
  • 1 teaspoon vanilla extract
  • 2 cups finely grated zucchini
  • 2 cups semi-sweet chocolate chips
  • 1/2 cup butter, softened
  • 3 cups powdered sugar
  • 1/3 cup heavy cream


Instructions

  1. Prep pans. Preheat the oven to 350ºF and grease three 8-inch cake pans, lining the bottoms with parchment paper.
  2. Whisk dry ingredients. Combine flour, cocoa powder, baking soda, baking powder, salt, and espresso powder in a large bowl.
  3. Mix wet base. Blend vegetable oil, both sugars, eggs, sour cream, and vanilla extract until smooth, then fold in the grated zucchini.
  4. Combine batter. Stir the wet mixture into the dry ingredients, fold in the chocolate chips, and divide evenly into the prepared pans.
  5. Bake layers. Bake for 35 to 40 minutes until a toothpick comes out clean, then cool in pans for 10 minutes before transferring to a wire rack.
  6. Create ganache base. Melt chocolate chips with one-third cup of heavy cream in short microwave intervals until glossy and smooth.
  7. Prepare buttercream. Beat the softened butter and salt until creamy, then incorporate the cocoa powder, powdered sugar, remaining cream, vanilla, and cooled ganache.
  8. Assemble cake. Spread buttercream between each layer and cover the top and sides, smoothing with a scraper for a clean finish.

Notes

  • Use the fine side of a box grater for the zucchini so it fully incorporates into the batter.
  • Always use the spoon-and-level method for measuring flour to avoid a dense, dry cake crumb.
  • Bring eggs and sour cream to room temperature to ensure the batter emulsifies perfectly.
  • Chill the assembled cake for thirty minutes before slicing to achieve clean, professional-looking edges.
  • Prep Time: 30 mins
  • Cook Time: 40 mins
  • Category: Dessert
  • Method: Baking
  • Cuisine: American