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Moist One-Bowl Chocolate Zucchini Cake Recipe with Easy Dark Ganache

moist one-bowl chocolate zucchini cake - featured image

A rich, fudgy chocolate zucchini cake made in one bowl with a glossy dark ganache topping. This easy recipe sneaks veggies into dessert while delivering moist, crowd-pleasing flavor.

Ingredients

Scale
  • 1 ¾ cups (220g) all-purpose flour
  • ⅓ cup (35g) unsweetened cocoa powder
  • 1 tsp baking soda
  • ½ tsp baking powder
  • ½ tsp salt
  • 1 cup (200g) granulated sugar
  • ½ cup (120ml) vegetable oil (or melted coconut oil)
  • 2 large eggs, room temperature
  • 1 ½ tsp vanilla extract
  • 1 ½ cups grated zucchini (about 2 medium zucchinis, squeezed to remove excess moisture)
  • 1 cup (170g) bittersweet or semisweet chocolate chips
  • ½ cup (120ml) heavy cream
  • 2 tbsp (28g) unsalted butter, softened

Instructions

  1. Preheat oven to 350°F (175°C). Lightly grease an 8×8 inch (20×20 cm) baking pan and line with parchment paper.
  2. Grate zucchini finely using a box grater. Place grated zucchini in a clean kitchen towel and squeeze out excess moisture.
  3. In a large mixing bowl, whisk together flour, cocoa powder, baking soda, baking powder, and salt.
  4. Add sugar, vegetable oil, eggs, and vanilla extract to the dry ingredients. Mix with a hand mixer or whisk until smooth and glossy, about 2-3 minutes.
  5. Gently fold in the grated zucchini with a spatula until evenly distributed. Do not overmix.
  6. Transfer batter to the prepared pan and spread evenly.
  7. Bake for 35-40 minutes, or until a toothpick inserted in the center comes out with a few moist crumbs.
  8. Cool the cake completely in the pan, about 30 minutes.
  9. To make ganache, heat heavy cream in a small saucepan over medium heat until just simmering. Pour over chocolate chips in a heatproof bowl and let sit for 2 minutes.
  10. Stir ganache gently until smooth and glossy, then stir in softened butter.
  11. Pour ganache over cooled cake and spread evenly. Chill cake for 20 minutes to set ganache before slicing.

Notes

Press the grated zucchini well to remove excess moisture to avoid a soggy cake. Use room temperature eggs and oil for smooth batter. Avoid overheating cream when making ganache. Let cake cool completely before spreading ganache. If ganache thickens too much, warm gently to loosen. Oven times may vary; start checking at 35 minutes.

Nutrition

Keywords: chocolate zucchini cake, one-bowl cake, dark ganache, easy dessert, moist chocolate cake, zucchini dessert, crowd-pleaser, quick cake