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Double Chocolate Zucchini Brownies

Published: Jul 13, 2025 by Cheryl · This post may contain affiliate links · Leave a Comment

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Rich, moist, and decadent, these Double Chocolate Zucchini Brownies are the perfect way to use up an abundance of zucchini from the garden. The blend of chocolate and zucchini creates a gooey, fudgy treat that everyone will love. These brownies are an irresistible twist on the classic, offering a delicious combination of vegetables and chocolate that’s surprisingly indulgent.

Double Chocolate Zucchini Brownies

Ingredients

1 medium zucchini, grated

½ cup unsweetened cocoa powder

1 cup all-purpose flour

1 teaspoon baking powder

½ teaspoon baking soda

¼ teaspoon salt

½ cup granulated sugar

½ cup brown sugar, packed

½ cup vegetable oil

2 large eggs

1 teaspoon vanilla extract

½ cup mini chocolate chips

¼ cup milk or dark chocolate chips (optional)

(Tip: You'll find the full list of ingredients and measurements in the recipe card below.)

Directions

Preheat the oven to 350°F (175°C). Grease or line a 9x9-inch baking pan with parchment paper.

Grate the zucchini using a box grater or food processor. Place the grated zucchini in a clean kitchen towel and squeeze out excess moisture.

In a medium bowl, whisk together the flour, cocoa powder, baking powder, baking soda, and salt.

In a separate large bowl, whisk together the granulated sugar, brown sugar, vegetable oil, eggs, and vanilla extract until smooth.

Add the dry ingredients to the wet ingredients and stir until combined. Fold in the grated zucchini and mini chocolate chips.

Pour the batter into the prepared baking pan and spread it out evenly. Sprinkle with optional chocolate chips on top if desired.

Bake for 25-30 minutes or until a toothpick inserted into the center comes out clean or with a few moist crumbs.

Allow to cool in the pan before slicing into squares.

Servings and Timing

Prep Time: 15 minutes

Cooking Time: 30 minutes

Total Time: 45 minutes

Servings: 12 servings

Storage/Reheating

To store these brownies, I like to keep them in an airtight container at room temperature for up to 3-4 days. If you need to keep them longer, you can refrigerate them for up to a week. These brownies can also be frozen for up to 3 months. To reheat, just pop them in the microwave for about 15-20 seconds or let them sit at room temperature until warmed through.

FAQs

Can I use a different type of flour for these brownies?

You can definitely experiment with other types of flour! If you're looking for a gluten-free version, almond flour or a gluten-free all-purpose flour blend should work well.

Can I leave out the zucchini?

I wouldn’t recommend leaving out the zucchini, as it’s what makes these brownies so moist. However, if you’re not a fan of zucchini, you could try replacing it with another vegetable like sweet potato or pumpkin.

How do I know when the brownies are done baking?

The brownies are done when a toothpick inserted into the center comes out clean or with a few moist crumbs. If it comes out wet with batter, it needs more time.

Can I add other mix-ins to these brownies?

Absolutely! You could add chopped nuts, shredded coconut, or even caramel bits for a unique twist. The possibilities are endless.

Are these brownies suitable for vegetarians?

Yes, these brownies are vegetarian-friendly as they contain no animal products other than eggs. For a vegan version, you could swap out the eggs with a flax or chia seed egg substitute.

Conclusion

These Double Chocolate Zucchini Brownies are an indulgent treat that combines the best of both worlds: the goodness of zucchini and the decadence of chocolate. With their moist, fudgy texture and rich flavor, they’re a perfect dessert to enjoy with family and friends, especially when zucchini is in abundance. Whether you’re baking for a crowd or just treating yourself, these brownies are sure to be a hit.


Recipe:

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Double Chocolate Zucchini Brownies

Double Chocolate Zucchini Brownies


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  • Author: Cheryl
  • Total Time: 45 minutes
  • Yield: 12 servings
  • Diet: Vegetarian
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Description

Rich, moist, and decadent, these Double Chocolate Zucchini Brownies are a perfect blend of chocolate and zucchini, offering a fudgy treat everyone will love.


Ingredients

1 medium zucchini, grated

½ cup unsweetened cocoa powder

1 cup all-purpose flour

1 teaspoon baking powder

½ teaspoon baking soda

¼ teaspoon salt

½ cup granulated sugar

½ cup brown sugar, packed

½ cup vegetable oil

2 large eggs

1 teaspoon vanilla extract

½ cup mini chocolate chips

¼ cup milk or dark chocolate chips (optional)


Instructions

  1. Preheat the oven to 350°F (175°C). Grease or line a 9x9-inch baking pan with parchment paper.
  2. Grate the zucchini using a box grater or food processor. Place the grated zucchini in a clean kitchen towel and squeeze out excess moisture.
  3. In a medium bowl, whisk together the flour, cocoa powder, baking powder, baking soda, and salt.
  4. In a separate large bowl, whisk together the granulated sugar, brown sugar, vegetable oil, eggs, and vanilla extract until smooth.
  5. Add the dry ingredients to the wet ingredients and stir until combined. Fold in the grated zucchini and mini chocolate chips.
  6. Pour the batter into the prepared baking pan and spread it out evenly. Sprinkle with optional chocolate chips on top if desired.
  7. Bake for 25-30 minutes or until a toothpick inserted into the center comes out clean or with a few moist crumbs.
  8. Allow to cool in the pan before slicing into squares.

Notes

Store in an airtight container at room temperature for up to 3-4 days or refrigerate for up to a week.

These brownies can be frozen for up to 3 months. Reheat in the microwave for about 15-20 seconds or at room temperature.

For a gluten-free version, you can substitute with almond flour or gluten-free all-purpose flour blend.

Consider adding other mix-ins like chopped nuts, shredded coconut, or caramel bits for variation.

For a vegan version, swap out the eggs for a flax or chia seed egg substitute.

  • Prep Time: 15 minutes
  • Cook Time: 30 minutes
  • Category: Dessert
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 square
  • Calories: 200
  • Sugar: 20g
  • Sodium: 90mg
  • Fat: 10g
  • Saturated Fat: 2g
  • Unsaturated Fat: 7g
  • Trans Fat: 0g
  • Carbohydrates: 28g
  • Fiber: 2g
  • Protein: 2g
  • Cholesterol: 35mg

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Hey there! I’m Cheryl and if there’s one thing I’ve learned, it’s that food has a way of bringing people together.

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