Zucchini Brownies: Moist, Fudgy, and Irresistibly Chocolatey

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zucchini brownies

If you’ve ever found yourself with more zucchini than you know what to do with (hello, summer garden surplus!), let me introduce you to one of the most delightful ways to use it: Zucchini Brownies. Rich, dense, and decadently chocolatey, these brownies are the perfect example of sneaky baking at its finest.

I first tried zucchini in a dessert when visiting a friend’s family in Oregon. Her mom served what she claimed were “healthier brownies,” and I was skeptical—until I bit in. Moist, fudgy, with the perfect crackly top and deep chocolate flavor… and not a trace of vegetable taste. I was hooked. Turns out, zucchini doesn’t make these brownies taste green—it just makes them irresistibly moist and tender.

This recipe blends classic American dessert traditions with the nutritious benefits of summer’s favorite veggie. Whether you’re baking for kids, guests, or yourself, this treat is one that surprises in the best way possible.

🍫 Why You’ll Love These Zucchini Brownies

  • Ultra moist and fudgy texture
  • Rich, deep chocolate flavor
  • No one will guess there’s zucchini inside
  • Lower in fat thanks to the moisture from zucchini
  • Perfect for using up garden zucchini
  • Can be made dairy-free or vegan

🧁 Ingredients (Makes 9–12 brownies)

Dry Ingredients:

  • 1 cup all-purpose flour (or gluten-free 1:1 blend)
  • ½ cup unsweetened cocoa powder
  • 1 teaspoon baking soda
  • ½ teaspoon salt

Wet Ingredients:

  • ½ cup vegetable oil (or melted coconut oil)
  • 1 cup granulated sugar (or coconut sugar)
  • 1 ½ teaspoons vanilla extract
  • 2 cups grated zucchini (unpeeled, packed)

Optional Add-ins:

  • ½ cup chocolate chips (semi-sweet or dark)
  • ½ cup chopped walnuts or pecans
  • Sprinkle of flaky sea salt (for topping)

⏱️ Prep & Bake Time

  • Prep Time: 15 minutes
  • Bake Time: 30–35 minutes
  • Cooling Time: 15 minutes
  • Total Time: ~1 hour

🧑‍🍳 Step-by-Step Instructions

zucchini brownies

Step 1: Preheat and Prep

  1. Preheat your oven to 350°F (175°C).
  2. Grease or line an 8×8 or 9×9 inch baking pan with parchment paper.

Step 2: Grate the Zucchini

  1. Use the fine side of a box grater.
  2. Do not peel the zucchini; skin adds texture and color.
  3. Lightly blot with a paper towel to remove excess moisture—do not wring out completely.

Step 3: Mix the Batter

  1. In a large mixing bowl, whisk together oil, sugar, and vanilla.
  2. Stir in the grated zucchini.

Step 4: Combine Dry Ingredients

  1. In a separate bowl, whisk flour, cocoa powder, baking soda, and salt.
  2. Gradually add to the wet ingredients, mixing until just combined.

Step 5: Add the Goodies

  1. Fold in chocolate chips and/or nuts if using.
  2. Batter will be thick—don’t worry, the zucchini will release moisture as it bakes.

Step 6: Bake

  1. Spread batter evenly into prepared pan.
  2. Bake for 30–35 minutes, or until a toothpick inserted in the center comes out with a few moist crumbs.

Step 7: Cool & Slice

  1. Let brownies cool completely in the pan before slicing.
  2. For extra decadence, sprinkle sea salt on top while warm.

🥄 Tips for the Best Zucchini Brownies

  • Use finely grated zucchini so it disappears into the batter.
  • Don’t skip the vanilla—it enhances the chocolate flavor.
  • Let them cool completely before slicing for clean cuts.
  • Want cakier brownies? Add an extra egg or reduce the oil by a couple of tablespoons.
zucchini brownies

🍽️ Serving Suggestions

  • A la mode: Top warm brownies with vanilla ice cream.
  • Frosted: Spread a simple chocolate ganache on top.
  • Berry combo: Serve with fresh raspberries or strawberries.
  • After-school treat: Pack them into lunchboxes or serve with a glass of milk.

🧊 Storage & Freezing

  • Room temperature: Store in an airtight container for up to 3 days.
  • Refrigerator: Keeps well for 5–6 days chilled.
  • Freezer: Wrap individual brownies and freeze for up to 3 months. Thaw at room temperature.

🍃 Make It Vegan or Healthier

Vegan Version:

  • Use coconut oil or vegan butter.
  • Swap sugar for coconut sugar or maple syrup.
  • Replace chocolate chips with dairy-free versions.

Healthier Adjustments:

  • Sub half the flour with almond flour.
  • Use applesauce for half of the oil.
  • Add ground flaxseeds for a nutrition boost.

🔁 Fun Variations

Double Chocolate Zucchini Brownies

  • Add ¾ cup melted dark chocolate into the batter.

Zucchini Mocha Brownies

  • Stir in 1 tablespoon of instant coffee or espresso powder.

Peanut Butter Swirl

  • Drop spoonfuls of peanut butter on top before baking and swirl with a knife.

❓ Zucchini Brownies FAQs

Can I taste the zucchini?

Not at all! Zucchini is mild and disappears into the batter.

Do I need to peel the zucchini?

Nope—just grate and go. The skin adds fiber and color.

Why are my brownies dry?

They may have baked too long. Also, make sure not to squeeze all the moisture out of the zucchini.

Can I make these gluten-free?

Yes—just use a 1:1 gluten-free flour blend.

🥬 Nutritional Highlights of Zucchini

Zucchini adds:

  • Moisture without extra fat
  • Vitamin C and potassium
  • Fiber and antioxidants
  • Low-calorie bulk to baked goods

It’s a summer superfood in disguise—especially when paired with chocolate!

Print
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zucchini brownies

Zucchini Brownies: Moist, Fudgy, and Irresistibly Chocolatey


Ingredients

Scale

Dry Ingredients:

  • 1 cup all-purpose flour (or gluten-free 1:1 blend)

  • ½ cup unsweetened cocoa powder

  • 1 teaspoon baking soda

  • ½ teaspoon salt

Wet Ingredients:

  • ½ cup vegetable oil (or melted coconut oil)

  • 1 cup granulated sugar (or coconut sugar)

  • 1 ½ teaspoons vanilla extract

  • 2 cups grated zucchini (unpeeled, packed)

Optional Add-ins:

  • ½ cup chocolate chips (semi-sweet or dark)

  • ½ cup chopped walnuts or pecans

  • Sprinkle of flaky sea salt (for topping)


Instructions

Step 1: Preheat and Prep

  1. Preheat your oven to 350°F (175°C).

  2. Grease or line an 8×8 or 9×9 inch baking pan with parchment paper.

Step 2: Grate the Zucchini

  1. Use the fine side of a box grater.

  2. Do not peel the zucchini; skin adds texture and color.

  3. Lightly blot with a paper towel to remove excess moisture—do not wring out completely.

Step 3: Mix the Batter

  1. In a large mixing bowl, whisk together oil, sugar, and vanilla.

  2. Stir in the grated zucchini.

Step 4: Combine Dry Ingredients

  1. In a separate bowl, whisk flour, cocoa powder, baking soda, and salt.

  2. Gradually add to the wet ingredients, mixing until just combined.

Step 5: Add the Goodies

  1. Fold in chocolate chips and/or nuts if using.

  2. Batter will be thick—don’t worry, the zucchini will release moisture as it bakes.

Step 6: Bake

  1. Spread batter evenly into prepared pan.

  2. Bake for 30–35 minutes, or until a toothpick inserted in the center comes out with a few moist crumbs.

Step 7: Cool & Slice

  1. Let brownies cool completely in the pan before slicing.

  2. For extra decadence, sprinkle sea salt on top while warm.