Zucchini Brownies

You won't taste the zucchini in this easy zucchini brownies recipe. It melts into the rich chocolate batter, making them amazingly gooey and moist.

Zucchini brownies

As soon as I finish writing this post, I’m heading to the kitchen and making more of these zucchini brownies. It’s impossible for me to sit here, looking at photos of their glossy tops and gooey, chocolatey middles and NOT start to crave them. Tell me they’re tempting you too?

The really fun thing about this zucchini brownies recipe is that even though is has 2 WHOLE CUPS of zucchini inside it, the zucchini is almost undetectable. It melts into the rich chocolate batter, giving the brownies an amazing moist and gooey texture. I’ll admit that they’re slightly cakier than the average homemade brownie, but overall, I think they’re just as good. The next time you have a craving for something super-chocolatey and delicious, give them a try. They’re guaranteed to satisfy your sweet tooth!

Zucchini brownie recipe ingredients

Zucchini Brownie Recipe Ingredients

Here’s what you’ll need to make these zucchini brownies:

  • Zucchini, of course! You’ll shred it on the large holes of a box grater. Don’t press or squeeze out any of the moisture. We want all of it to go into the brownies!
  • Ground flaxseed and water – They act as a binder in the recipe, making the brownies nice and dense.
  • All-purpose flourSpoon and level it to avoid packing too much into your measuring cup.
  • Granulated sugar – For sweetness.
  • Cocoa powder – It adds rich, chocolatey flavor.
  • Melted coconut oil – For moisture and richness.
  • Baking powder – It helps the brownies rise.
  • Vanilla extract – For warm depth of flavor.
  • Chocolate chips – I like to use dark chocolate chips to intensify the brownies’ chocolate flavor, but milk or semisweet chocolate chips will work here too.
  • And sea salt – You’ll mix fine sea salt into the batter. Top the brownies with flaky sea salt to make the chocolate flavor pop!

Find the complete recipe with measurements below.

Dry ingredients in mixing bowl with whisk

How to Make Zucchini Brownies

These zucchini brownies are super simple to make! Here’s how you’ll do it:

First, make the flax egg. Stir together the flaxseed and water in a small bowl. Set them aside for 5 minutes to thicken.

Then, combine the dry ingredients. Whisk together the flour, sugar, cocoa powder, baking powder, and salt in a medium mixing bowl.

Hand pouring vanilla extract into mixing bowl with wet ingredients

Next, mix together the wet ingredients. In a large bowl, whisk together the coconut oil, flaxseed mixture, and vanilla.

Hand whisking wet ingredients in mixing bowl

Beat vigorously to incorporate the flax with the other ingredients.

Bowl of wet ingredients for zucchini brownies

Stir in the zucchini.

Partially mixed zucchini brownie batter in a mixing bowl with spatula

Then, combine the wet and dry ingredients. Add the dry ingredients to the zucchini mixture and stir to incorporate them. The batter will feel very dry – that’s ok! Do your best to mix the ingredients together, then let the batter rest for 1 minute.

Batter for zucchini brownies in mixing bowl with spatula

The zucchini will release moisture into the mixture, making it easier to combine. After 1 minute, stir again, and the batter will be smooth, thick, and fudgy.

Stir just until no dry areas remain. Fold in the chocolate chips.

Pan of zucchini brownies before baking

It’s time to bake! Transfer the batter to an 8×8-inch baking dish lined with parchment paper. Use a spatula to smooth the top, and then sprinkle on some more chocolate chips. Yum!

Bake at 325°F until the brownies are set in the middle, 45 to 50 minutes. A toothpick inserted in the center should come out clean.

Allow to cool in the pan for at least an hour. Slice and enjoy!

Stack of three zucchini brownies on cutting board

Best Zucchini Brownies Tips

  • Mix together the batter in two phases. Because much of the moisture in this recipe comes from the zucchini, the batter will be very dry when you first mix it together. Stir it together as best you can, and then let it rest for 1 minute. This time gives the zucchini a chance to release some of its moisture into the batter. After a minute, you should be able to combine the batter with no trouble. Don’t be tempted to stir continuously instead of taking the minute to let the batter rest. If you do, you’ll overmix it, making the brownies tough.
  • Expect the brownie batter to be thick. It’ll be spreadable, but not pourable. Don’t worry – it’s supposed to be thick!
  • Let them cool in the pan for at least an hour. Like regular fudgy brownies, these zucchini brownies NEED time to set up after they come out of the oven. As they cool, they become moister, gooier, and more cohesive. Slice them too early, and they’ll crumble.

Zucchini brownies recipe

More Easy Baking Recipes

If you love these zucchini brownies, try one of these baked goods next:

Zucchini Brownies

rate this recipe:
5 from 19 votes
Prep Time: 15 mins
Cook Time: 45 mins
Total Time: 1 hr
Serves 16
You won't taste the zucchini in these easy zucchini brownies! It melts into the rich chocolate batter, making them amazingly gooey and moist. Use vegan chocolate chips to make this recipe vegan.

Ingredients

  • 2 tablespoons ground flaxseed
  • 5 tablespoons water
  • cups all-purpose flour, spooned and leveled
  • 1 cup granulated sugar
  • cup cocoa powder, sifted
  • 1 teaspoon baking powder
  • ½ teaspoon sea salt
  • ½ cup melted coconut oil
  • 1 teaspoon vanilla extract
  • 2 cups grated zucchini, don’t drain or squeeze
  • ½ cup dark chocolate chips, plus more for topping
  • Flaky sea salt, optional, for sprinkling

Instructions

  • Preheat the oven to 325°F. Grease an 8x8-inch baking dish and line it with parchment paper.
  • In a small bowl, stir together the flaxseed and water and set aside for 5 minutes to thicken.
  • In a medium bowl, whisk together the flour, sugar, cocoa powder, baking powder, and salt.
  • In a large bowl, whisk together the coconut oil, vanilla, and flaxseed mixture. Stir in the zucchini.
  • Add the dry ingredients to the zucchini mixture and stir to combine as best you can. Let rest for 1 minute and stir again. The mixture will be thick and dry at first, but it will become smoother and wetter as the zucchini releases moisture into the batter. Stir until there are no dry areas remaining, then fold in the chocolate chips.
  • Pour the batter into the prepared pan and use a spatula to smooth the top. Sprinkle with more chocolate chips and flaky sea salt, if using. Bake for 45 to 50 minutes, or until the brownies are set in the middle and a toothpick inserted into the center comes out clean.
  • Let cool for at least an hour before slicing.

20 comments

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Rate this recipe (after making it)




  1. Lara Hoffmans
    09.12.2022

    I love everything about this except the coconut oil, which we are avoiding due to a low-cholesterol diet. Can I swap in something else? Vegetable/canola/avocado oil?

    • Jeanine Donofrio
      09.13.2022

      Hi Lara, butter is the closest sub. I haven’t tried it with the other oils, but they should work fine.

  2. Raquel
    09.11.2022

    I made these last night and they are unbelievably good! You can’t even see the slivers of zucchini in them once baked, they just magically disappear. Thank you for this recipe!

    • Jeanine Donofrio
      09.13.2022

      I’m so glad you loved them!

  3. Amy
    09.08.2022

    I’m not gonna lie, I was a bit worried when I spread the “paste” in the pan, but they turned out great! Everyone loved them!!!

  4. Jeanne
    09.07.2022

    Can make syrup replace the sugar and egg the flax?

  5. Debbie Earnest
    08.28.2022

    What are the nutritional facts?

    • Jeanine Donofrio
      08.28.2022

      I’m sorry, we don’t post them, but you can plug the ingredients into a site like my fitness pal.

  6. Rose
    08.27.2022

    5 stars
    Hello! I just made these and they are gorgeous! As a matter of fact, I plan to make a second batch tomorrow (thanks to a giant zucchini!) which I will freeze.
    I found that a scant amount of sugar made them sweet enough and I baked mine for only 30 minutes and they were done to perfection – just a smidge fudgy. Thanks for an easy, great tasting brownie recipe!!

    • Jeanine Donofrio
      08.28.2022

      Hi Rose, I’m so glad you loved them!

    • Mrs E from loveandlemons.com
      09.14.2022

      Hi Rose… How much sugar did you use? And did you make that oil the same or did you cut that down as well?

      • Rose
        09.17.2022

        Hi Mrs. E. I think I worded that inaccurately. What I should have said was that I used a scant amount of the sugar indicated in the recipe. In other words, I used a little less than a cup. And I used the amount of oil called for in the recipe, I didn’t adjust that at all. They really were delicious!

  7. Nothinginthepantry
    08.25.2022

    I’m out of flax…could applesauce – or even eggs – be used in place of the flax egg? If so, how much?

  8. Sara
    08.24.2022

    5 stars
    These are incredible!!! I used cane sugar instead of white granulated sugar and they are sooo yummy!!!!! I highly recommend baking them! – Sara

    • Jeanine Donofrio
      08.24.2022

      I’m so glad you loved them!

  9. Kirsten
    08.23.2022

    Is there a way to make these gluten free?

    • Joy Brothers
      08.24.2022

      Swap out the AP flour for the same amount of Bob’s Red Mill I to I GF flour!

    • Jeanine Donofrio
      08.26.2022

      Hi Kirsten, a GF blend like Bob’s might work. We haven’t tested it though.

  10. Rosemary
    08.23.2022

    I would love to make these brownies. All ingredients are great but I’m pre-diabetic and cutting back my sugars. What can I substitute for the sugar please?
    Thank you

    • Rose
      09.14.2022

      From one Rosemary to another, hi! Have you tried using monkfruit as a sugar substitute? Or perhaps xylitol? I’m afraid my knowledge is limited in terms of your condition, so perhaps these options are not for you, but I thought I’d pass along the suggestion just in case you CAN use them.

A food blog with fresh, zesty recipes.
Photograph of Jeanine Donofrio and Jack Mathews in their kitchen

Hello, we're Jeanine and Jack.

We love to eat, travel, cook, and eat some more! We create & photograph vegetarian recipes from our home in Chicago, while our shiba pups eat the kale stems that fall on the kitchen floor.