Zucchini Brownies Recipe

These Zucchini Brownies are about to become your new go-to treat for fudgy, chocolatey goodness with a hidden healthy twist! Moist, ultra-rich, and topped with a dreamy chocolate frosting, this recipe is my secret weapon for sneaking veggies into dessert—all while creating the most irresistible brownies you’ll ever sink your teeth into.

Why You’ll Love This Recipe

  • Fudgy Texture: The zucchini melts right in, delivering brownies that are dense and gooey—never cakey or dry.
  • Nutrient Boost: With two full cups of zucchini, you get a secret serving of veggies (and no one will ever guess!).
  • Dreamy Chocolate Frosting: That glossy, rich topping takes every bite to new fudgy heights.
  • Easy & Crowd-Pleasing: The simple pantry ingredients make this a quick treat for bake sales, potlucks, or unexpected cravings.
Zucchini Brownies Recipe - Recipe Image

Ingredients You’ll Need

Pulling together Zucchini Brownies is delightfully easy, and every ingredient truly earns its spot in the lineup. Here’s a peek at what makes each one unique—and how they all build the most decadent, satisfying brownies!

  • White Sugar: The foundation of sweetness and that signature brownie chew.
  • Vegetable Oil: Keeps the brownies soft and impossibly moist (no dry bites here!).
  • Vanilla Extract: Gives an aromatic depth that enhances all that chocolate flavor.
  • All-Purpose Flour: Brings just enough structure to hold the gooey texture together.
  • Unsweetened Cocoa Powder: Packs in rich, chocolatey flavor for both the brownies and the decadent frosting.
  • Baking Soda: Helps the batter rise just enough—think plush, not fluffy.
  • Salt: Balances sweetness and intensifies the cocoa’s complexity.
  • Shredded Zucchini: The moisture hero! It disappears into every bite, yielding tender, fudgy brownies without ever tasting “vegetably.”
  • Chopped Walnuts: Adds crunch and nutty warmth—feel free to leave them out or swap if you prefer.
  • Butter (for frosting): Creates a velvety base that brings the frosting together.
  • Confectioners’ Sugar: Sweetens and thickens the frosting to that dreamy, spreadable consistency.
  • Milk: Smooths the frosting for an irresistibly silky finish.
Note: You’ll find the complete list of ingredients, along with their exact measurements, in the printable recipe card at the bottom of this post.

Variations

The magic of Zucchini Brownies is how easily the recipe adapts to your kitchen and cravings. Need to swap an ingredient or mix in some new flavors? No problem—here are some fun ways to make these brownies your own.

  • Gluten-Free: Substitute your favorite gluten-free flour blend and enjoy fudgy brownies everyone can eat.
  • Dairy-Free: Use plant-based margarine and a non-dairy milk for the frosting, and you’ll have a totally dairy-free treat.
  • Nut-Free: Skip the walnuts or swap in chocolate chips for a gooey, melt-in-your-mouth twist.
  • Extra Chocolate: Stir in a handful of semi-sweet chocolate chips to make these brownies even more indulgent!

How to Make Zucchini Brownies

Step 1: Prep Your Pan and Oven

Start by preheating your oven to 350°F (175°C) and greasing and flouring a 9×13-inch baking pan. Lining the pan with parchment makes removal a breeze—especially if you want perfectly neat squares!

Step 2: Mix Wet Ingredients

In a large mixing bowl, combine the white sugar, vegetable oil, and vanilla extract. Whisk until the mixture is smooth and looks almost creamy—this is your flavor-packed base.

Step 3: Combine Dry Ingredients

In another bowl, whisk together the flour, unsweetened cocoa powder, baking soda, and salt. This ensures your cocoa and leavening are evenly distributed for perfectly risen brownies.

Step 4: Bring It All Together

Stir the dry ingredients into the wet mixture just until combined—no need to overmix. Fold in the shredded zucchini and chopped walnuts gently so every bite is full of fudgy goodness and nutty crunch.

Step 5: Bake to Perfection

Spread the thick batter evenly into your prepared pan. Bake for 25–30 minutes, or until the top looks set and the edges pull slightly from the pan. Let cool for about 20 minutes before frosting—this patience is totally worth it!

Step 6: Make and Spread the Frosting

While the brownies cool, warm the cocoa powder and butter together on medium-low, whisking until glossy. Let the mixture cool a bit, then blend in the confectioners’ sugar, milk, and vanilla for a smooth, thick frosting. Spread over the cooled brownies, then slice and savor every fudgy bite!

Pro Tips for Making Zucchini Brownies

  • Shred, Don’t Squeeze: Leave all the zucchini’s moisture in—don’t blot or squeeze it dry, since that natural liquid is the secret to ultra-fudginess.
  • Even Slicing: Let the frosted brownies cool completely before cutting for the cleanest (and prettiest!) squares.
  • Baking Check: Brownies should just start pulling away from the sides—the center will continue to set as they cool, so don’t wait for a totally dry middle.
  • Frosting Texture: If your frosting seems a bit thick, add a splash more milk for easy spreading; if too thin, sift in a little more confectioners’ sugar.

How to Serve Zucchini Brownies

Zucchini Brownies Recipe - Recipe Image

Garnishes

Top these Zucchini Brownies with an extra sprinkle of chopped walnuts, a dusting of cocoa powder, or even a handful of mini chocolate chips right after frosting for a fun, flavorful finish that pops on the plate.

Side Dishes

For gatherings, serve your brownies alongside a scoop of vanilla ice cream, a dollop of whipped cream, or a big bowl of summer berries—the cool, creamy flavors are a gorgeous contrast to the decadent chocolate.

Creative Ways to Present

Cut Zucchini Brownies into bite-sized squares and arrange them on a tiered dessert tray, drizzle with melted chocolate for extra flair, or stack them with parchment for DIY brownie gift boxes that absolutely wow friends and family!

Make Ahead and Storage

Storing Leftovers

Keep Zucchini Brownies extra moist by storing them in an airtight container at room temperature for up to 3 days—they’ll stay tender and fudgy, especially with that luscious frosting.

Freezing

For longer storage, freeze individual squares (frosted or unfrosted) in a single layer, then transfer to a freezer bag. They’ll keep well for up to 2 months; just thaw at room temp when a chocolate craving strikes!

Reheating

If you want that just-baked warmth, pop a brownie in the microwave for 10–15 seconds—the frosting might get deliciously gooey, so eat it with a fork for pure comfort food bliss.

FAQs

  1. Do Zucchini Brownies actually taste like zucchini?

    Nope—the zucchini completely melds into the batter, adding moisture but leaving no veggie flavor behind. All you’ll taste is rich, chocolatey brownie perfection!

  2. Can I make Zucchini Brownies without nuts?

    Absolutely! Just skip the walnuts, or swap in your favorite nut or chocolate chips to keep that texture fun and satisfying.

  3. Should I peel the zucchini before grating?

    There’s no need—the skin is soft and blends right into the brownies. Just wash, grate, and you’re set!

  4. Can I double this recipe for a party?

    You sure can! Just bake in two pans for even heating, or use a sheet pan and check the center for doneness before slicing into party-sized brownies.

Final Thoughts

If you’re ready for a brownie that truly wows—full of chocolate flavor, sneaky veggies, and amazing texture—these Zucchini Brownies have your name on them. Give them a try, share with someone you love, and don’t be surprised if this becomes your signature bake!

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Zucchini Brownies Recipe

Zucchini Brownies Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 4.9 from 136 reviews
  • Author: Julia
  • Prep Time: 15 mins
  • Cook Time: 25 mins
  • Total Time: 1 hr
  • Yield: 1 (9×13-inch) pan 1x
  • Category: Baking
  • Method: Baking

Description

Indulge in these decadent Zucchini Brownies that are rich, moist, and perfectly chocolaty. The addition of shredded zucchini adds a hint of freshness and extra moisture, making these brownies a delightful treat for any occasion.


Ingredients

Units Scale

Brownies:

  • 1 1/2 cups white sugar
  • 1/2 cup vegetable oil
  • 2 teaspoons vanilla extract
  • 2 cups all-purpose flour
  • 1/2 cup unsweetened cocoa powder
  • 1 1/2 teaspoons baking soda
  • 1 teaspoon salt
  • 2 cups shredded zucchini
  • 1/2 cup chopped walnuts

Frosting:

  • 6 tablespoons unsweetened cocoa powder
  • 1/4 cup butter
  • 2 cups confectioners’ sugar
  • 1/4 cup milk
  • 1/2 teaspoon vanilla extract

Instructions

  1. Gather the ingredients. Preheat the oven to 350 degrees F (175 degrees C). Grease and flour a 9×13-inch baking pan.
  2. Mix sugar, oil, and 2 teaspoons vanilla together in a large bowl until well blended. Combine flour, 1/2 cup cocoa, baking soda, and salt together in a separate bowl; stir into sugar mixture.
  3. Fold in zucchini and walnuts; spread batter evenly into the prepared pan.
  4. Bake in the preheated oven until top is dry and edges have started to pull away from the sides of the pan, about 25 to 30 minutes. Let cool, about 20 minutes.
  5. Make the frosting: Whisk 6 tablespoons of cocoa and butter in a pan over medium-low heat until smooth and glossy; set aside to cool.
  6. Blend confectioners’ sugar, milk, and 1/2 teaspoon vanilla together; stir into cooled cocoa mixture. Spread over cooled brownies before cutting into squares.


Nutrition

  • Serving Size: 1 brownie
  • Calories: 209
  • Sugar: 23g
  • Sodium: 200mg
  • Fat: 9g
  • Saturated Fat: 2g
  • Carbohydrates: 33g
  • Fiber: 2g
  • Protein: 2g
  • Cholesterol: 0mg

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