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The Ultimate Fudgy Chocolate Zucchini Brownies: Moist, Decadent, and Secretly Healthy

Close-up of a fudgy, rich square of zucchini brownies topped with melted chocolate chips.

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Make rich, fudgy zucchini brownies that are incredibly moist. This easy recipe uses garden zucchini to add moisture, creating a decadent chocolate treat that everyone loves, even picky eaters. This is the best zucchini brownies recipe you will want to save.

Ingredients

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  • 1 cup all-purpose flour
  • 1/2 cup unsweetened cocoa powder
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1 cup granulated sugar
  • 1/2 cup packed light brown sugar
  • 1/2 cup unsalted butter, melted
  • 2 large eggs
  • 1 teaspoon vanilla extract
  • 1 1/2 cups finely grated zucchini, squeezed dry
  • 1/2 cup semi-sweet chocolate chips (optional, for topping)

Instructions

  1. Preheat your oven to 350°F (175°C). Grease and flour an 8×8 inch baking pan, or line it with parchment paper leaving an overhang.
  2. In a large bowl, whisk together the flour, cocoa powder, baking soda, and salt.
  3. Add the granulated sugar and brown sugar to the dry ingredients and mix well.
  4. Pour in the melted butter, eggs, and vanilla extract. Mix until just combined; do not overmix.
  5. Gently fold in the finely grated and squeezed dry zucchini until evenly distributed throughout the batter.
  6. Spread the batter evenly into the prepared baking pan. Sprinkle the chocolate chips over the top if you are using them.
  7. Bake for 25 to 30 minutes. A toothpick inserted near the center should come out with moist crumbs attached, not wet batter, for a fudgy texture.
  8. Let the brownies cool completely in the pan on a wire rack before cutting into squares.

Notes

  • Squeeze the grated zucchini very well using a clean kitchen towel or paper towels to remove excess water. This step is key for fudgy brownies.
  • For extra richness, use dark cocoa powder.
  • If you want a slightly cake-like texture instead of fudgy, bake for 5 minutes longer.

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