Chocolate Zucchini Brownies Recipe
If you’re searching for a dessert that’s rich, fudgy, and sneaks in a healthy twist, you have to try this Chocolate Zucchini Brownies Recipe. These brownies are the perfect balance of deep chocolatey goodness and moistness thanks to shredded zucchini, which keeps every bite decadently tender without overwhelming the classic brownie flavor. Whether you’re looking for a way to get a little extra veg into your treats or simply craving a luscious homemade dessert, this recipe will quickly become a favorite in your baking repertoire.

Ingredients You’ll Need
The beautiful thing about this Chocolate Zucchini Brownies Recipe is that it relies on simple, pantry-friendly ingredients that come together to create extraordinary flavor and texture. Each component plays a key role, from the rich cocoa powder to the tender zucchini, ensuring every bite is moist, chocolate-packed, and completely irresistible.
- Vegetable oil: Provides the perfect moist foundation without altering the flavor, keeping brownies tender.
- Granulated sugar: Adds sweetness and helps create that classic chewy brownie texture.
- Light brown sugar (packed): Brings a subtle caramel note that deepens the overall flavor.
- Vanilla extract: Enhances the chocolate flavor with aromatic warmth and balance.
- All-purpose flour: Gives structure and body, making sure brownies hold together nicely.
- Dark unsweetened cocoa powder: Packs intense chocolate flavor with a touch of bitterness to balance the sugars.
- Baking soda: Helps the brownies rise just enough for a tender crumb.
- Kosher salt: Amplifies all the flavors and cuts through the sweetness.
- Finely shredded zucchini: Adds moisture and a slight earthiness without a strong vegetable taste.
- Unsalted butter (melted): Used in the frosting for richness and a smooth texture.
- Powdered sugar: Sweetens and thickens the frosting to a luscious finish.
- Heavy whipping cream: Contributes creaminess and helps emulsify the frosting ingredients.
How to Make Chocolate Zucchini Brownies Recipe
Step 1: Prepare and Preheat
Start by preheating your oven to 350 degrees Fahrenheit and lining a 13×9-inch baking dish with parchment paper. This step ensures your brownies don’t stick and makes cleanup a breeze. The precise oven temperature helps cook the brownies evenly, so they come out perfectly fudgy and moist every time.
Step 2: Mix the Wet and Dry Ingredients
In a large bowl, combine the vegetable oil, granulated sugar, light brown sugar, and vanilla extract. Then, add the all-purpose flour, 1/2 cup of dark unsweetened cocoa powder, baking soda, and kosher salt. Stir the batter thoroughly until everything is just blended. The batter will appear very dry at this point, but don’t worry—that’s exactly what you want before adding the zucchini.
Step 3: Fold in Shredded Zucchini
Carefully fold in the finely shredded zucchini. Its moisture content can vary, so your batter might still seem a bit dry. That’s okay because letting the batter sit for 10 minutes allows the dry ingredients to absorb the zucchini’s natural moisture, resulting in the perfect brownie texture once baked.
Step 4: Bake to Perfection
Pour the batter into your prepared baking dish and bake for 25 to 30 minutes. The brownies are done when a toothpick inserted near the center comes out with a few moist crumbs but no wet batter. Remove the pan from the oven and let your brownies cool completely before moving on to frosting—this cooling step helps the frosting spread beautifully without melting.
Step 5: Make the Chocolate Frosting
In a small bowl, whisk together the melted unsalted butter and 5 tablespoons of dark cocoa powder. Then add powdered sugar, heavy whipping cream, and 1/2 teaspoon vanilla extract. Whisk everything together until the frosting is smooth and spreadable. Finally, generously spread the frosting over the cooled brownies for a luscious, shiny top layer.
How to Serve Chocolate Zucchini Brownies Recipe

Garnishes
Elevate your Chocolate Zucchini Brownies Recipe by adding a few simple garnishes. A light dusting of powdered sugar can create a pretty contrast, or sprinkle some finely chopped nuts like walnuts or pecans on top of the frosting for an extra crunch and nutty flavor that pairs wonderfully with the fudgy brownies.
Side Dishes
Serve these brownies alongside a scoop of vanilla ice cream or a dollop of freshly whipped cream to balance out the richness with cool creaminess. A cup of freshly brewed coffee, rich espresso, or even a glass of cold milk makes an excellent companion to complete your dessert experience.
Creative Ways to Present
For a fun twist, cut the brownies into bite-sized squares and serve them on skewers with fresh berries or marshmallows for a playful dessert platter. You could also layer crumbled brownies in a parfait glass with layers of whipped cream and fresh fruit to reinvent the presentation while keeping all the beloved flavors intact.
Make Ahead and Storage
Storing Leftovers
Once frosted, store your Chocolate Zucchini Brownies Recipe airtight at room temperature for up to three days. If your kitchen is warm, keeping them in the refrigerator helps maintain the frosting’s texture. When stored properly, these brownies stay moist and delicious as if they were freshly baked.
Freezing
If you want to save some for later, wrap uncut brownies tightly in plastic wrap and place them in an airtight container or freezer bag. They freeze well for up to three months. When you’re ready to enjoy, thaw them in the refrigerator overnight before frosting or eating as is.
Reheating
To bring your brownies back to that freshly baked warmth, heat individual squares in the microwave for about 10 to 15 seconds. This slight warmth revives the fudgy texture and slightly softens the frosting, making every bite simply heavenly.
FAQs
Can I use yellow squash instead of zucchini in this recipe?
Yes, yellow squash works beautifully in this recipe as it has a similar moisture content and mild flavor that won’t overpower the chocolate. Just shred it finely as you would the zucchini for the best results.
Will the zucchini flavor be noticeable in the brownies?
No need to worry about that! When shredded finely and combined with rich cocoa and sugar, zucchini blends into the background, adding moistness without an overt vegetable taste. Even picky eaters usually can’t detect it.
Can I substitute coconut oil for vegetable oil?
Absolutely! Coconut oil adds a slight coconut aroma and richness. Use it melted and in the same quantity as vegetable oil to maintain the brownie’s texture and moistness.
How do I know when the brownies are perfectly baked?
Insert a toothpick into the center; it should come out with a few moist crumbs but no wet batter. The edges will look set and may start to pull slightly from the pan. Avoid overbaking to keep them fudgy.
Can I make these brownies gluten-free?
Yes! Replace all-purpose flour with a gluten-free all-purpose blend that includes xanthan gum. The texture will be slightly different but still delicious and moist thanks to the zucchini.
Final Thoughts
Once you try this Chocolate Zucchini Brownies Recipe, it’s hard to go back to ordinary brownies. The way the zucchini transforms the texture and adds a subtle, wholesome goodness is pure magic. Dive in, share with loved ones, and enjoy the rich, fudgy sweetness knowing there’s a little extra nutrition tucked inside. Happy baking!
PrintChocolate Zucchini Brownies Recipe
These Chocolate Zucchini Brownies are a moist, rich, and fudgy treat that cleverly incorporates shredded zucchini for added moisture and nutrition. Perfect for a delicious dessert or snack, these brownies combine dark chocolate cocoa, brown sugar, and a smooth chocolate frosting to create an indulgent experience everyone will love.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Total Time: 45 minutes
- Yield: 12 brownies 1x
- Category: Dessert
- Method: Baking
- Cuisine: American
- Diet: Vegetarian
Ingredients
Brownies
- 1/2 cup vegetable oil
- 1 cup granulated sugar
- 1/2 cup light brown sugar (packed)
- 2 teaspoons vanilla extract
- 2 cups all-purpose flour
- 1/2 cup dark chocolate unsweetened cocoa powder
- 1 1/2 teaspoons baking soda
- 1 teaspoon kosher salt
- 2 1/2 cups finely shredded zucchini
Frosting
- 1/4 cup unsalted butter (melted)
- 5 tablespoons dark chocolate unsweetened cocoa powder
- 2 cups powdered sugar
- 6 tablespoons heavy whipping cream
- 1/2 teaspoon vanilla extract
Instructions
- Preheat Oven and Prepare Pan: Preheat your oven to 350°F (175°C). Line a 13×9 inch baking dish with parchment paper to prevent sticking and set aside.
- Mix Brownie Batter: In a large mixing bowl, combine the vegetable oil, granulated sugar, light brown sugar, and vanilla extract until well combined. Add the all-purpose flour, 1/2 cup unsweetened dark cocoa powder, baking soda, and kosher salt. Stir together until the mixture is thoroughly blended. Note that the batter will appear very dry, which is normal.
- Incorporate Zucchini: Gently fold in the finely shredded zucchini. Depending on the moisture content of your zucchini, the batter may remain slightly dry. Let the batter rest for 10 minutes to allow the zucchini moisture to integrate before transferring to the baking dish.
- Bake the Brownies: Pour the batter evenly into the prepared baking dish and bake in the preheated oven for 25 to 30 minutes. Check for doneness by inserting a toothpick into the center; it should come out with moist crumbs, not wet batter. Remove from the oven and allow the brownies to cool completely in the pan.
- Prepare the Frosting: In a small bowl, whisk together the melted unsalted butter and 5 tablespoons of dark cocoa powder until smooth. Gradually add the powdered sugar, heavy whipping cream, and vanilla extract, whisking continuously until the frosting is creamy and well combined.
- Frost and Serve: Spread the chocolate frosting evenly over the cooled brownies using a spatula or knife. Once frosted, cut into bars and serve. Enjoy your moist, chocolaty zucchini brownies!
Notes
- Using finely shredded zucchini helps keep the brownies moist without adding a strong vegetable taste.
- Be sure to let the brownies cool completely before frosting to prevent the frosting from melting.
- You can substitute vegetable oil with melted coconut oil for a slight flavor variation.
- Store leftovers in an airtight container at room temperature for up to 3 days or refrigerate for up to a week.
- For a gluten-free version, substitute all-purpose flour with a gluten-free flour blend.
Nutrition
- Serving Size: 1 brownie (approx. 2×2 inch)
- Calories: 280 kcal
- Sugar: 25 g
- Sodium: 210 mg
- Fat: 14 g
- Saturated Fat: 4 g
- Unsaturated Fat: 9 g
- Trans Fat: 0 g
- Carbohydrates: 35 g
- Fiber: 3 g
- Protein: 3 g
- Cholesterol: 15 mg
Keywords: chocolate zucchini brownies, zucchini dessert, moist brownies, chocolate frosting, healthy brownies, vegetable brownies