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    Hummusapien » Recipes » Dessert » Vegan Peanut Butter Zucchini Brownies

    Vegan Peanut Butter Zucchini Brownies

    Published Jun 10, 2019 · Modified Feb 15, 2022 · by Alexis Joseph · 102 Comments

    Jump to Recipe

    These healthy Vegan Peanut Butter Brownies are gooey, decadent, and perfectly sweet--made with only one bowl and seven ingredients. They're gluten-free, too!

    sliced peanut butter brownies

    The best recipes come to me when I'm out of all the ingredients.

    Raise your hand if you remember my Almond Butter Zucchini Bars from three million years ago. CRICKETS. Thank God I redid the photos.

    Over three years ago, I was out of flour and thus made said bars out of almond butter. It was quite the life-changing day. So what's a food blogger to do when she's out not only of flour, but also of almond butter?

    She uses peanut butter. Mainly because it was 10 for $10 at Kroger, but that's besides the point.

    We're talking the drippy kind, my friends. The kind where you open in at there's a pool of occurring oil at the top that either nauseates you or excited you.

    If you're thinking more the former, than know this. Commence the tirade!

    peanut butter brownies with fork

    Why Does Natural Peanut Butter Have Oil at the Top?

    If it's not natural peanut butter and the company wants to get rid of this separation, they'll blast oil with hydrogen (hence the word "hydrogenated") to make the oil solid. This forms trans fats, AKA partially hydrogenated oil. Not the most fabulous thing now is it?

    I like to buy drippy peanut butter. I store it upside down and then I mix in the oil with a knife once I open it and store it in the refrigerator. I store nuts and seeds in the refrigerator long term but let's be real, a jar of nut butter isn't lasting too long in this girl's pantry.

    The good news is that peanut butter with just peanuts and salt as the ingredients is often very similar in price to regular peanut butter, like Kroger's natural peanut butter which is $1.86.  I buy Costco's Kirkland peanut butter because it's my favorite.

    Ooey, gooey, one bowl, 7-ingredient Flourless Vegan Peanut Butter Zucchini Brownies! They

    Key Ingredients

    Guess what? You're only seven ingredients away from these flourless peanut butter zucchini brownies! They may be vegan and free but the best part is how EASY they are. One bowl. ONE BOWL. At this point it's like who even cares how they taste? I kid.

    Jeff made them yesterday all by himself. This post was originally published three years ago and I wanted to give it a little refresh. You can make them in a loaf pan or an 8x8 inch pan but note that they have different cooking times.

    Now lettuce chat about are what you need to whip up these wholesome brownies:

    • natural peanut butter: the drippy kind with peanuts and salt as the ingredients.
    • pure maple syrup: honey or agave would also work.
    • ground flax: you could replace with an egg.
    • shredded zucchini: the one and only. Don't squeeze the water out!
    • cocoa powder: I use cacao, a more nutrient-dense version of cocoa powder, but any 100% cocoa is fine.
    • baking soda: rise!
    • chocolate chips: Costco and Trader Joe's have my favorite affordable chocolate chips.

    hand holding brownies

    Storage Tips

    Let the brownies cool completely on a wire rack. I like to place the pan in the fridge once it's cool as this makes slicing foolproof. From there, store in an air-tight container in the refrigerator or freezer. Microwave for a few seconds before eating for those melty chocolate chips!

    Please let me know how this flourless peanut butter zucchini brownies recipe turns out for you by leaving a star rating and/or comment! Your house is about to smell soooooo good.

    CRAVING MORE CHOCOLATEY GOODNESS? DON’T MISS MY OTHER GO-TO BAKING RECIPES:

    • One Bowl Vegan Chocolate Zucchini Banana Bread
    • The Best Vegan Brownies Recipe
    • Fudgy Vegan Raspberry Almond Butter Brownies
    • Vegan Chocolate Zucchini Muffins
    • Dark Chocolate Raspberry Black Bean Brownies

    hand holding brownie

    Print
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    Peanut Butter Zucchini Brownies Recipe

    ★★★★★ 4.9 from 23 reviews
    • Author: Alexis Joseph | Hummusapien
    • Prep Time: 5 mins
    • Cook Time: 30 mins
    • Total Time: 35 mins
    • Yield: 10 1x
    • Category: Dessert
    • Method: Oven
    • Cuisine: American
    • Diet: Vegan
    Print Recipe
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    Description

    These healthy Flourless Peanut Butter Zucchini Brownies are gooey, decadent, and perfectly sweet--made with 1 bowl and 7 ingredients! They're free of refined sugar, flour, butter, and oil.


    Ingredients

    Units Scale
    • ¾ cup natural peanut butter (I used salted)
    • ¼ cup pure maple syrup
    • 1 cup shredded zucchini (don't squeeze out water)
    • ¼ cup cocoa powder
    • 2 tbsp ground flaxseed
    • ¾ tsp baking soda
    • ¼ cup chocolate chips (I like mini), plus more for sprinkling
    • Optional: splash vanilla extract, pinch of salt if using unsalted peanut butter

    Instructions

    1. Preheat oven to 350F. Grease an 8x8inch baking dish or loaf pan with cooking spray.
    2. Place all ingredients except chocolate chips in a large bowl. Stir until well combined. Fold in chocolate chips.
    3. Dump mixture into loaf pan and use a spatula to spread evenly in pan (you can also wet your hands and pat it down). Sprinkle top with a handful of chocolate chips, if desired. Bake for 30 minutes.
    4. Allow brownies to completely cool (I like to refrigerate mine overnight in the pan once cool) before slicing.

    Notes

    • I find that natural drippy peanut butter works best,  not the hard kind. Look for the kind where the only ingredients are peanuts and salt. Can sub almond butter and omit sweetener for a paleo version.
    • Feel free to replace flax with an egg instead if you're not vegan.
    • Store in an air-tight container in the refrigerator or freezer. Microwave for a few seconds before eating for those melty chocolate chips!

    Did you make this recipe?

    Tag @hummusapien on Instagram. I love sharing what you make!

     

    About Alexis Joseph


    Oh HEY there! I'm Alexis Joseph, food writer, blogger, Registered Dietitian Nutritionist (RDN), new mama, and co-founder of local restaurant group, Alchemy. I use my passion for cooking and wellness as fuel to help others ignite a more freeing and happy relationship with food.

    Learn more about Alexis!

    5 Secrets to Delish, Healthy Lunches

    Reader Interactions

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      Recipe rating ★☆ ★☆ ★☆ ★☆ ★☆

    1. Christina Monroy says

      August 09, 2017 at 4:52 pm

      Do you think Carob Powder or Cacao would work just as well?

      Reply
    2. JSF says

      August 05, 2017 at 11:21 pm

      Real peanut butter is SOOO much better! Taste and health-wise, Alexis, thank you for publishing this in your recipe!

      The mess of stirring up Natural PB is usually the biggest turn off most people have to using it regularly. I found the solution to this problem: Grandpa Witmer's Old Fashioned Peanut Butter Mixer, a product that should be sold alongside all jars of "drippy" PB!! You replace the jar lid with this lid which has a "S" curved metal rod with a knob/handle on one end that fits through the lid like a butter churn. You crank it for a short time and wa-la! Mixed PB! No drippy oil over the side of your jar. You have to experience this!!

      PS Make sure you buy the right size lid for the brand of PB you usually buy.

      ★★★★★

      Reply
    3. Sarah says

      July 08, 2017 at 9:45 am

      I made these yesterday exactly like the recipe said and they turned out fantastic! thanks for the recipe =)

      ★★★★★

      Reply
    4. Abigail says

      April 23, 2017 at 10:28 pm

      Thanks for share this article, it very useful for me.
      I look forward to your new article.

      Reply
    5. Ellen Lederman says

      April 18, 2017 at 12:50 pm

      These are crazy good! I can have brownies again, thanks to you. I admit I had my doubts making it. The batter was delicious, but would it really bake up like a brownie? And hold together? Yup and yup! Genius! I was able to cut the maple syrup to 2 T since the semi-sweet chips added some sweetness. Perfection!

      ★★★★★

      Reply
    6. Debbie says

      December 12, 2016 at 2:13 pm

      Just made these today. I did double the recipe and baked them in an 8x8 pan. They turned out great. I did have to bake about 20 minutes longer. They were moist and chewy. Not real sweet. If I could post a pic I would. I'm getting ready to freeze them for my vegan company coming this weekend.

      Reply
      • Alexis says

        December 12, 2016 at 3:14 pm

        So happy you like them! Yum they are so good straight outta the freezer and I hope you and your company have a great weekend.

        Reply
    7. Kirsty Ellis says

      November 30, 2016 at 1:23 pm

      How long will they last In the fridge?

      Reply
      • Alexis says

        November 30, 2016 at 2:26 pm

        I would say up to two weeks! They'll last longer and be super yummy in the freezer as well 🙂

        Reply
    8. Kate says

      October 07, 2016 at 7:30 pm

      These brownies are DELICIOUS!
      I made a batch for myself and the next day I made another batch to bring out because they were soooo good!
      No one would have guessed they had zucchini in them either. I love and adore this alternative to other brownies filled with processed/refined sugar and flour etc.
      I use an egg instead of flaxseed so I can't comment on how they would be otherwise but ABSOLUTELY DELICIOUS!
      Can't get enough of them - I'm baking another batch right now 🙂 thank you, thank you, thank you!
      5 STARS!

      ★★★★★

      Reply
      • Alexis says

        October 11, 2016 at 12:45 pm

        This makes my heart so happy! Bringing amazing people like you these recipes is what keeps me motivated. Eat on!

        Reply
    9. LeAnn says

      September 14, 2016 at 10:37 am

      What kind of chocolate chip do you recommend? Dark chocolate? Semi-sweet? Thanks!

      Reply
      • Alexis says

        September 14, 2016 at 12:02 pm

        I like the one's from Trader Joe's. Semi-sweet is my go-to!

        Reply
      • Alexis says

        September 15, 2016 at 10:03 am

        I always go for dark chocolate! The Whole Foods brand has a bag of dark chocolate "chunks" that I've recently discovered and they're AMAZE.

        Reply
    10. Denise says

      August 26, 2016 at 1:59 pm

      These are amazing! I didn't have maple syrup so I substituted an equal amount of honey. I also used one egg and one tbsp of flax seed (not ground). Super moist! Thanks!

      ★★★★★

      Reply
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    Well HELLO there, pal! I'm Alexis. Welcome to Hummusapien, a fantastical food blog brimming with nourishing (always delish!) recipes from a Registered Dietitian plus life tidbits to inspire you to live your most joyful, balanced life. Grab a super hot cup o' joe and let's get cookin'.

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