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A three layer triple chocolate zucchini cake resting on a wire cooling rack

Triple Chocolate Zucchini Cake


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5 from 7 reviews

  • Author: Jordan Owen Buxton
  • Total Time: 1 hour 40 mins
  • Yield: 12 servings
  • Diet: Vegetarian

Description

This advanced chocolate zucchini cake achieves a perfectly moist, velvety crumb by balancing natural vegetable moisture with rich cocoa intensity. Expertly layered with a silky ganache buttercream, this decadent dessert offers a sophisticated profile that masks any vegetal notes.


Ingredients

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


Instructions

  1. Prepare the pans. Preheat oven to 350ºF, grease three 8-inch round pans, line with parchment, and wrap with damp fabric strips.
  2. Combine dry elements. Sift flour, cocoa, baking soda, baking powder, espresso powder, and salt together in a large bowl, whisking for 30 seconds to ensure even distribution.
  3. Emulsify wet ingredients. Whisk oil, sugars, eggs, sour cream, and vanilla until smooth, then fold in the grated zucchini until evenly suspended.
  4. Mix the batter. Combine wet and dry mixtures, folding in chocolate chips until just incorporated, taking care not to over-mix.
  5. Bake the layers. Divide batter equally into prepared pans and bake for 35 to 40 minutes, or until a toothpick inserted into the center comes out clean.
  6. Cool the cake. Rest layers in pans for 10 minutes, then invert onto wire racks to cool completely to room temperature before frosting.
  7. Prepare the frosting. Create a ganache with melted chocolate and cream, then whip with butter, salt, cocoa, and powdered sugar until light and stable.
  8. Assemble and chill. Stack layers with ganache buttercream between them, apply a crumb coat, and refrigerate for 30 minutes to firm before final serving.

Notes

  • Use a digital kitchen scale for accurate flour and zucchini measurements to prevent the cake from becoming too dense.
  • Ensure all refrigerated ingredients reach room temperature before mixing to allow for a proper, stable emulsion.
  • Do not squeeze liquid out of the grated zucchini, as this moisture is essential for the starch gelatinization process.
  • Use a hot, clean blade when slicing to ensure professional-looking, sharp edges through the dense ganache layers.
  • Prep Time: 30 mins
  • Cook Time: 40 mins
  • Category: Dessert
  • Method: Baking
  • Cuisine: American