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Two freshly baked layers of One-Bowl Chocolate Zucchini Cake cooling in round pans on a wire rack.

One-Bowl Chocolate Zucchini Cake


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5 from 12 reviews

Description

This rich and tender chocolate zucchini cake uses the natural moisture of grated vegetables to create a velvety crumb with minimal effort. Perfectly indulgent yet surprisingly simple, this one-bowl recipe is the ideal solution for quick weeknight dessert cravings.


Ingredients

  • 2 cups all-purpose flour
  • 1/2 cup unsweetened natural cocoa powder
  • 1 teaspoon baking soda
  • 1/2 teaspoon baking powder
  • 1/2 teaspoon salt
  • 1 teaspoon espresso powder (optional)
  • 1/2 cup vegetable oil
  • 1 cup granulated sugar
  • 1/2 cup light brown sugar
  • 2 large eggs, room temperature
  • 1/2 cup sour cream
  • 1 teaspoon vanilla extract
  • 2 cups finely shredded zucchini
  • 1 cup semi-sweet chocolate chips
  • 1/2 cup softened butter
  • 2 cups confectioners’ sugar
  • 3 tablespoons heavy cream


Instructions

  1. Prep pans and oven. Preheat your oven to 350°F (177°C) and grease two 9-inch round cake pans, lining them with parchment paper.
  2. Combine dry ingredients. Whisk together the flour, cocoa powder, baking soda, baking powder, salt, and optional espresso powder until uniform.
  3. Whisk wet ingredients. Beat the vegetable oil, sugars, eggs, sour cream, and vanilla for two minutes before stirring in the shredded zucchini.
  4. Mix the batter. Gently stir the dry ingredients into the wet until just combined, then fold in the semi-sweet chocolate chips.
  5. Bake the cakes. Divide batter evenly into pans and bake for 28 to 32 minutes, or until a toothpick inserted into the center comes out clean.
  6. Cool the layers. Place pans on a wire rack for one hour before inverting the cakes to remove them from the pans for final cooling.
  7. Prepare the frosting. Whip softened butter with confectioners’ sugar, cocoa powder, heavy cream, salt, and vanilla until fluffy.
  8. Assemble and serve. Level the cooled cake layers, frost between them, and coat the entire cake with the remaining chocolate buttercream.

Notes

  • Always measure flour by spooning it into the cup rather than scooping directly to avoid a dense texture.
  • Use the fine side of a box grater for zucchini to ensure it melts completely into the cake crumb.
  • Blot shredded zucchini lightly with a paper towel to remove excess water without drying it out completely.
  • Ensure butter is at room temperature to prevent lumps from forming in your chocolate buttercream frosting.
  • Avoid over-mixing the batter once the flour is added to keep the cake tender instead of tough.
  • Prep Time: 15 mins
  • Cook Time: 30 mins
  • Category: Dessert
  • Method: Baking
  • Cuisine: American