If you’ve never added zucchini to your baked goods drop everything you are doing and do it now! These Zucchini Brownies are unbelievably moist and rich. A chocolate lovers dream! Be sure to try my Zucchini Cake and Chocolate Zucchini Cake! (and if you want a zucchini-less brownie recipe, try this one!!)

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Stacked Zucchini Brownies Showing the Inside Creamy Texture
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Zucchini Brownies

When I first made these Zucchini Brownies in 2012 I declared that I would never need another brownie recipe. They are the BEST brownie I have ever eaten, hands down. But, zucchini is very much a seasonal product, so having a great brownie recipe that doesn’t have zucchini is important. Every summer I am reminded just how magical zucchini is in baked goods and these become my favorite again!

Grated ZUcchini

The Secret to Baking with Zucchini

Size matters. A large zucchini will be drier. A small zucchini with have more moisture. Certain recipes work best with different sizes. For instance, I tend to use a medium to small with this recipe because I want the moisture the zucchini brings, but I use a large zucchini for my Double Chocolate Zucchini Cupcakes.

Use the fine side of your grater. Coarser pieces will have a slightly more noticeable flavor and texture in a finished cake or bread recipe. (Farm kids tend to want that!)

Some recipes ask that the zucchini is pressed well with a clean towel to soak up excess moisture or to prevent whatever your baking from getting too soggy. Pay close attention to the recipe that you are making with zucchini as the level of moisture they provide is important. For instance, in this recipe, the zucchini is the main source of moisture and should NOT be drained!

Eggless Brownies Zucchini Brownie From Overhead Showing Top Texture

Double Chocolate Zucchini Brownies

This recipe is going to test any experienced bakers boundaries as it does not act like a normal brownie.

The batter is DRY. Extremely dry. Until you add the zucchini that is! Assemble the batter according to the recipe instructions and then let it rest for 5 minutes. Stir again and you will see how much moisture the zucchini adds!

I added semi-sweet chocolate chunks to this batch to make the double chocolate. You can add milk chocolate chips, peanut butter chips, white chocolate chips, or no chips! They are so good and so rich the extra flavor is not necessary. (But can be fun!) If you do use chocolate morsels instead of chunks, be sure to use 1 1/2 cups instead of 1 1/4. Reserve a few for the top too!

The Secret to Baking with Zucchini in Chocolate Brownies

As you can see, the zucchini bits practically disappear into the glorious chocolate layers. If you don’t tell people, they will never know you added a full 3 cups of this abundant vegetable!

How to Freeze Zucchini Brownies

When the brownies are completely cooled wrap with plastic wrap and then place into an airtight container, in a freezer-safe plastic storage bag, or wrap again with aluminum foil. Be sure to label them with the date.

When you are ready to enjoy the brownies again, remove them from the freezer and place them in the refrigerator overnight or on the counter. Once they reach room temperature you are ready to enjoy them.

More Zucchini Desserts

zucchini-brownies
4.96 from 273 votes

Zucchini Brownies

Prep Time 10 minutes
Cook Time 35 minutes
Total Time 45 minutes
If you’ve never added zucchini to your baked goods drop everything you are doing and do it now! These Zucchini Brownies are unbelievably moist and rich. A chocolate lovers dream!

Ingredients

  • ½ cup (112 g) vegetable oil
  • 1 ½ cups (300 g) granulated sugar
  • 1 tablespoon vanilla extract
  • 2 cups (256 g) all-purpose flour
  • ½ cup (64 g) unsweetened cocoa powder
  • 1 ½ teaspoon baking soda
  • 1 teaspoon kosher salt
  • 3 cups finely shredded zucchini DO NOT DRAIN
  • 1 ¼ cups semi-sweet chocolate chunks

Instructions

  • Preheat oven to 350°F and prepare a 9×13 pan with butter (or use baking spray) and line with parchment paper. (Allow parchment paper to go up the sides for easy removal.)
  • In a large bowl combine oil, sugar, and vanilla until fully incorporated.
  • Add flour, cocoa, baking soda, and salt. Mix until combined. Batter will be very dry.
  • Fold in zucchini by hand. Allow batter to rest for 5 minutes.
  • Add in chocolate chunks and stir again. Batter should appear more wet. (if not, let it rest for 5 more minutes and stir again)
  • Spread brownie mixture into the pan and bake for 25-35 minutes. Brownies are done with an inserted toothpick is removed with crumbs. There should not be wet batter on the toothpick.

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Eggless Brownies

You will notice that there are no eggs or butter added to this recipe. They are absolutely not needed! These Zucchini Brownies bake up beautifully (almost cake-like) and do not need the added air and flavor that eggs usually add. This is a great recipe for vegan friends!

Another bonus? This recipe can be made in 1 bowl!

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Meet Amanda Rettke

Amanda Rettke is the creator of I Am Baker, and the bestselling author of Surprise Inside Cakes: Amazing Cakes for Every Occasion – With a Little Something Extra Inside.Over the course of her 15+ year blogging adventure, she has been featured in and collaborated with the Food Network, New York Times, LA Times, Country Living Magazine, People Magazine, Epicurious, Brides, Romantic Homes, life:beautiful, Publishers Weekly, The Daily Mail, Star Tribune, The Globe and Mail, DailyCandy, YumSugar, The Knot, The Kitchn, and Parade, to name a few.

Reader Comments

  1. I think I will just drain the liquid off with out squeezing it all out…I’ll let you know. I hope this will be a good recipe to use up all my zucchini from last year.

  2. Very rich and moist. No sign of the zucchini in these. Texture is like a cross between a brownie and cake. Maybe more like a snack cake. This is going to be a go to recipe for us. I bake a lot and my family has high standards. This recipe is a winner!

  3. This is the best brownie recipe i have ever tried. It is superior to brownies that dont have zuchinni!! You will not regret making this 100%

  4. These have become a family favorite since I first stumbled upon this recipe during the Pandemic.
    It is easy to make and these turn out perfect every time I bake a batch. I have shared these with several friends and they all LOVE them. Thank you for this. It is such an easy recipe that my great nieces love helping me make them. The recipe is super easy and very child-friendly. TRY THEM.

  5. These are a go-to! I have been experimenting with freezing zucchini shreds to use throughout the whole year for this. (So far I have to add more liquid along with the shreds even though I don’t drain off that excess liquid after thawing) I also agree with the other comments that it’s more like a fudgy cake!

  6. I love this recipe! My non veggie eating 6 year old enjoys them so much. I only do half the amount of sugar and they come out perfect. Thank you!!

  7. This was the definition of “trust the process.” I know the recipe says that the batter will be very dry, but that did not translate to what was in my bowl. I thought, this is the texture of kinetic sand, this cannot be corrext. I kept double checking the recipe to make sure I hadn’t left out some wet ingredient. But it all came together, and they are very good brownies.

  8. Hi. I love your recipes. The first one I tried was the zucchini chocolate muffins and they came out AMAZING and nobody believed they contained zucchini.

    However, when I made the zucchini brownies they came out too dense and the consistency was very different than when I made the muffins.

    I’m guessing it’s the amount of zucchini I used. I finely shredded medium zucchinis and added 3 cups like the recipe indicated.

    Any advice?

    Thank you.

    1. HI Denise – So glad you enjoyed the muffins! So the brownies are supposed to be more dense and chewy, similar to traditional brownies. Muffins should be lighter. Hope that helps!

  9. Can you substitute almond flour
    and Monk Fruit sweetener for sugar?
    Also different healthier oil?
    They look yummy😊

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