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Fudgy One-Bowl Zucchini Brownies with Dark Chocolate Frosting

fudgy zucchini brownies - featured image

These fudgy zucchini brownies combine moist, dense chocolate with shredded zucchini for a sneaky veggie twist, topped with a rich, glossy dark chocolate frosting. Easy to make in one bowl, they balance indulgence and nutrition perfectly.

Ingredients

Scale
  • 1 cup (125 g) all-purpose flour
  • 3/4 cup (75 g) unsweetened cocoa powder, preferably Dutch-processed
  • 1/2 teaspoon baking powder
  • 1/4 teaspoon salt
  • 1 cup (200 g) granulated sugar
  • 2 large eggs, room temperature
  • 1/2 cup (120 ml) vegetable oil or melted coconut oil
  • 1 teaspoon pure vanilla extract
  • 1 large or 2 small medium zucchini, shredded and squeezed to remove excess moisture (about 1 cup/100 g)
  • 1/2 cup (90 g) semisweet chocolate chips (optional)
  • For the Dark Chocolate Frosting:
  • 4 ounces (115 g) dark chocolate (70% cocoa or higher), chopped finely
  • 1/3 cup (80 ml) heavy cream, warm
  • 2 tablespoons (28 g) unsalted butter, softened
  • 2 tablespoons (15 g) powdered sugar, sifted
  • Pinch of salt

Instructions

  1. Preheat the oven to 350°F (175°C). Line an 8×8 inch baking pan with parchment paper, leaving some overhang for easy removal.
  2. Shred the zucchini using a box grater or food processor. Place the shreds in a clean kitchen towel and squeeze out as much moisture as possible.
  3. In a mixing bowl, whisk together the all-purpose flour, unsweetened cocoa powder, baking powder, and salt until evenly combined.
  4. Stir in the granulated sugar, then add eggs, vegetable oil, and vanilla extract. Mix until just combined; the batter will be thick and glossy.
  5. Gently fold in the shredded zucchini and chocolate chips, distributing evenly without deflating the batter.
  6. Pour the batter into the prepared pan and spread evenly with a spatula.
  7. Bake for 25-30 minutes. Insert a toothpick into the center; it should come out with a few moist crumbs but no wet batter. If too gooey, bake an additional 3-5 minutes, watching closely.
  8. Cool the brownies completely in the pan on a wire rack for at least 1 hour before frosting.
  9. To make the frosting, heat the heavy cream in a small saucepan over medium heat until it just begins to simmer (about 2 minutes). Pour over chopped dark chocolate in a heatproof bowl. Let sit for 2 minutes, then stir gently until smooth and glossy.
  10. Whisk in softened butter, powdered sugar, and a pinch of salt until rich and silky. If too runny, chill for 5-10 minutes and stir again before spreading.
  11. Spread the frosting evenly over the cooled brownies using an offset spatula or back of a spoon.
  12. Refrigerate for 15 minutes to set the frosting before slicing.
  13. Cut into 12 squares and serve.

Notes

Squeeze zucchini thoroughly to avoid soggy brownies. Use room temperature eggs for better batter consistency. Mix just until combined to prevent tough brownies. Let brownies cool completely before frosting to avoid melting. Toothpick test should show moist crumbs for fudgy texture. For gluten-free, substitute flour with almond or gluten-free blend. For dairy-free frosting, use coconut cream and dairy-free chocolate.

Nutrition

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