Say hello to a fan favorite on Ambitious Kitchen: this one bowl grain free peanut butter zucchini bread. I created this recipe 5 years ago after Tony’s mom gave me 5 large zucchini from her garden. I kid you not, they were the size of my arm and I’m pretty sure that was the summer #AKZucchiniWeek started.
I love this bread SO much because not only is it ultra fluffy, moist, and perfectly sweet, but it’s also incredibly easy to make and freezes well for easy breakfasts and snacks. As the title suggests, it can be made two different ways! Feel free to use coconut flour or add extra protein by mixing in protein powder.
Any way you bake it up, just know that it’s going to be delicious.
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Ingredients in this grain free peanut butter zucchini bread
- Zucchini: the holy grail of all summer vegetables! Adding shredded zucchini gives the bread moisture so that we don’t need to add extra oil.
- Peanut butter: I used an all natural VERY creamy peanut butter with only peanuts and salt as the ingredients. Yes, that’s the stir kind with the oil on top! Use the code ‘AMBITIOUS15‘ to get 15% off of my fav nut butter brand, Wild Friends.
- Maple syrup: There isn’t a ton of maple syrup in this recipe, but it is necessary. I also DO NOT recommend using honey instead of maple syrup as I think the bread may brown too much when it bakes.
- Eggs: you’ll need two eggs in this bread recipe to help it bake up.
- For the flour: here’s where we get creative! You have the option to use coconut flour OR your fav protein powder as the “dry” base of this bread.
- Baking staples: don’t forget the vanilla extract (learn how to make it here), baking soda, and little cinnamon for cozy flavor.
- Chocolate chips: these are optional, but I love having melted chocolate in every bite. I prefer dark chocolate chips, but you do you.

Optional nut butter swaps
I love the flavor that peanut butter gives the bread but feel free to use natural, drippy almond butter, cashew butter, or, to make it nut free, sunflower butter. If you’d like to make it nut free, remember to use protein powder instead of coconut flour.
Can I make it vegan?
I have not tested this recipe with a flax or chia egg. I don’t think that you would get the best results from using those, but you can always let me know if you are willing to try it. A few readers have reported using a banana and flax egg, but please refer to the comments! Then be sure to use dairy free/vegan chocolate chips.

Peanut butter zucchini bread two different ways
As I mentioned, there are two options when you make this bread (well technically three):
- Use coconut flour: I personally LOVED the coconut flour version because it really gave the bread that extra fluff factor.
- Use protein powder: the protein version was INCREDIBLE for a protein baked good — plus I didn’t get any funky aftertaste from it. I tested this recipe with both a plant-based protein powder and a whey or dairy protein powder so that I could give you options! The protein powders I tested the recipe with were Aloha Vanilla Protein Powder (plant-based, no stevia) AND Vital Proteins Collagen Peptides. I could not tell the difference between the two when tasting the final product. Both were amazing. If you try the protein version, be sure to let me know what kind of protein you end up using! I’d love to know.
- BONUS option: I have also tested this bread with whole wheat flour and got amazing results. I put that in the note section of the recipe.
This bread is soft, fluffy, moist and creates a beautiful golden crust. While the chocolate chips are absolutely necessary, they do enhance the sweetness (obviously?) and make it incredibly addicting. Serve it warm with a little slather of extra PB on top and I promise you’ll love me forever.
More zucchini recipes you’ll love
- Good Morning Healthy Blueberry Zucchini Muffins
- The Best Zucchini Brownies You’ll Ever Eat
- Chunky Monkey Zucchini Banana Muffins
- Healthy Double Chocolate Zucchini Bread (Nut Free + Vegan + Gluten Free!)
- Orange Zucchini Cake with Orange Frosting
Get all of my zucchini recipes here!
I hope you love this grain free peanut butter zucchini bread! If you make it be sure to leave a comment and a rating so I know how you liked it. Enjoy, xo!
Ambitious Kitchen
Cookbook
125 Ridiculously Good For You, Sometimes Indulgent, and Absolutely Never Boring Recipes for Every Meal of the Day
Grain Free Chocolate Chip Peanut Butter Zucchini Bread {2 different ways!}

Ingredients
- 1 medium zucchini, shredded & squeezed of excess moisture (about 1 cup shredded zucchini)
- 3/4 cup all natural creamy peanut butter*
- 1/4 cup pure maple syrup
- 2 large eggs, slightly beaten
- 1 teaspoon vanilla extract
- 2 tablespoons packed coconut flour OR 2 scoops (about 1/2 cup) of protein powder of choice*
- 1 teaspoon baking soda
- 1/2 teaspoon cinnamon
- 1/2 cup dark chocolate chips, dairy free if desired
Instructions
- Preheat oven to 350 degrees F. Grease an 8x4 inch loaf pan with nonstick cooking spray or line with parchment paper. (It's easier to get out if you use parchment paper.)
- In a large bowl, mix shredded zucchini, peanut butter, maple syrup, eggs and vanilla with whisk until well combined and creamy. Stir in coconut flour OR protein powder (but not both!), baking soda and cinnamon. You can also add in a pinch of salt if your peanut butter wasn't salted (mine was). Mix until just combined. Next, fold in chocolate chip reserving about a tablespoon for sprinkling on top.
- Pour batter into prepared pan, smooth top and sprinkle the tablespoon of chocolate chips on top. Bake for 40-50 minutes or until a toothpick comes out clean. The bread will develop a nice brown crust, so don't be nervous if you observe this while baking.
- Once done baking, remove from oven and transfer pan to a wire rack to cool for 15 minutes. Once cool enough, remove bread from pan and transfer to wire rack to cool completely. Cut into 12 delicious slices.

This was good but I love other ambitious kitchen recipes more!
whenever I think of zucchini bread, I keep coming back to this recipe… 6 years later. Such an amazing staple gf recipe!
So happy to hear that!!
Hi! How much whole wheat flour would I use? Thank you!
I wouldn’t recommend swapping the flour in here – sorry! The texture will be much different.
These are amazing! I love the texture and all my kids love them too. I double the recipe and make into muffins and I think they are even better that way!
Great idea! Perfect kiddo-friendly snack 🙂
I want to try this with whole wheat flour but there are no directions for this in the notes of the recipe, despite the blog post saying so. Please help!
Hi! It is a 1:1 sub! Enjoy.
So thankful to find healthy dessert recipes that use coconut flour and no refined white sugar!!!
Delightful! I made this with 1/2 cup of whole wheat pastry flour, and it came out beautifully.
Glad that worked well! 🙂
Wow! Delicious and so moist! I also made it with no chocolate and it’s the yummiest PB zucchini bread ever! I have been grain free for over 2 months and no dairy, no soy, no eggs, no sugar (except occasional honey or maple syrup, and low glycemic fruit), no nightshades, and I love that it uses only 2 TBsp of coconut flour! It’s so good! My kids love it! My husband prefers it w/o chocolate too! We made 4 loaves: 1 to the recipe, 1 without choco chips on top, 1 with 1 Tbsp almond flour, and 1 Tbsp coconut flour, and 1 with no chocolate and that’s my favorite b/c I’m used to less sweet. I used Organic Naturally Creamier Peanut Butter that has sea salt. It’s the best PB I’ve had. And 1 Giant zucchini could have made 5 loaves! I’ve been on an elimination diet for 9 weeks and this is the first time I’ve had eggs in a baked item. I tried them scrambled about a month ago, but had breathing trouble, so this time, baked in with no wheat, and I’m fine. It is so satiating and zucchini is actually a little sweet! I haven’t tried the chocolate with 1/2 almond flour yet, b/c we’re freezing those loaves, but I want to try making one w/ no chocolate and 1/2 almond flour. I wonder how it will taste w/ the PB and almond flour. It looks just as fluffy as the coconut flour. Such a wonderful recipe! Thank you!
So happy to hear you loved it, Pollyanna! Thanks so much for sharing all of this, and for the review 🙂
This recipe is amazing!!! Used all natural almond butter for the coconut flour version since that’s all I had on hand, and it turned out fantastic. Was hard to stop at just one slice! I may or may not be on my way to making this the second week in a row…thanks for such a great recipe, Monique!
This was DELICIOUS. My husband has been cutting carbs like oats and flour, so I was searching for a snack/dessert for him. This was amazinggggg. Thank you!
Note: I actually used sunflower seed butter instead of peanut butter and it was still great.
I supposed this recipe would work even without the zucchini? Maybe carrots…or banana?
I’m so happy you guys are loving this one, Melinda! Yay! Great call to sub in the sunflower seed butter. I haven’t tried it with anything but zucchini–let me know if you do! And that reminds me, I have an awesome grain-free carrot cake that you guys might like 🙂
Thank you!!
Really enjoying this bread! I made one with almond butter and one with peanut butter, but I honestly can’t tell the difference lol! Husband wishes it had more of flavor of the nut butters, but I added a drizzle of maple when I ate it, and I think it added to the flavor perfectly. In both loaves my chocolate chips dropped to the bottom of the bread. Any ideas of why and how to prevent it?
So happy to hear that! Next time try tossing the chocolate chips with a bit of flour before adding them to the batter.
Another winner. I used coconut flour and almond butter and it came out exactly like regular zucchini bread. My husband thought that it could be a low carb substitute for regular bread if I left off the chocolate chips.
Amazing! So glad you both enjoyed 🙂
I used chunky organic peanut butter and the coconut flour. I doubled the recipe. My new favorite! Thank you!
Love it! Glad you enjoyed!
These are so good. I’ve made these with flour in the past and was skeptical that the protein powder version could be as good but they were amazing. I used chocolate whey protein, almond butter, and half a dark chocolate bar instead of chocolate chips. Baked into muffins following your muffin instructions and they make the perfect portable snack.
Love that idea! Glad you enjoyed 🙂
Hi!! May I know if I can use all purpose flour instead? Will it work as well?
Hi! Try this zucchini bread recipe instead 🙂
Great recipie, thank you!
Absolutely! Glad you enjoyed!
I just made this recipe and am SO impressed! It is delicious and a huge hit with my five year old which is always bonus points!! I am planning to make a few more loaves tomorrow to drop off to friends and family! Thank you for this!
Amazing! So happy to hear that, Jessica 🙂
I made this recipe several times last year and LOVED it! Just got some zucchini’s on hand and plan on making a loaf this weekend for our morning coffee.
Delicious! Sounds like the perfect morning 🙂
Hi! I made this and it is very good. Interestingly it turned blue/green inside and on top. Any idea why? 😬😬
Hi! Did you happen to use sunflower seed butter? Or a certain type of protein powder — maybe plant based?
Could you make these with almond flour?
I wouldn’t recommend swapping flours – try this recipe instead! https://www.ambitiouskitchen.com/almond-flour-banana-bread/
This bread is AMAZING! I cant believe it has so many good healthy ingredients and tastes like dessert! My family gobbled the whole loaf in a day they loved it so much! Thanks for creating such fun and nutritious recipes that are so easy to make.
Absolutely! I’m so glad everyone loves it.
I can’t even count the times I’ve made this. It is a huge family favorite. I make it for our family get togethers. I thought I was making it too much and skipped it one day and 3 people asked for it. So now it has become a regular dessert that everyone has come to expect! Thank you!
So happy to hear that, Nita! It’s one of my go-to’s, too 🙂 Glad everyone loves it.
I love this recipe!!! Such an amazing grain free option with healthy ingredient. No guilt!
Absolutely! One of my favs 🙂 glad you love it!
Tasted great! However my chocolate chips fell to the bottom even after a light coating in coconut flour.
Help?
Glad you enjoyed! Sorry to hear that you had this issue – you might need to try tossing in a little more flour next time.
I used Almond Butter, packet of Stevia w/ 1/4 C. Filtered Water, instead of Maple Syrup, 1 T. Vanilla, NO SALT, and Sugar Free Choc Chips. Took exactly 40 min. Baked beautifully.
One of my favs!
great!
so delicious!
I tried this with flegg and almond butter used plant base protein powder and a tablespoon of nutritional yeast. It was delicious.
I must have did something wrong. I followed the recipe but all my chocolate chip sank to the bottom and made a layer of chocolate. Any ideas for next time? I used protein powder.
Try coating your chocolate chips in the protein powder before stirring them into the batter!
Oh, Monique, this is divine! I had 2 slices…:)
Glad you enjoyed! 🙂
Looks so delicious and moist ❤
It is! One of my favs.
Thank you for all your wonderful recipes!
I have made this bread both ways and they turned out great. I used a plain whey protein powder for the traditional recipe with zucchini. I also made it with the substitute of a cup of canned pumpkin instead of zucchini and used Vega vanilla protein powder and that also turned out amazing! Thanks again!
Amazing! Glad to hear it works well with pumpkin, too. Yum!
I don’t have any coconut flour in the pantry but I do have banana flour, would it be OK to try that instead?
I haven’t worked with banana flour before so I can’t make a recommendation, sorry!
I am obsessed with this bread!! Quick and easy and tastes delicious!! Quick note: I’ve used Quest Peanut Butter protein powder and the recipe comes out great. I tried using Wheybolic protein powder and the bread sunk in, twice!
So glad you love it! Hmmm I’m not sure what the issue could be, but each protein powder has slightly different ingredients so the Wheybolic ones could be affecting the baking!
Hi!! May I know if I can use all purpose flour instead? Will it work as well?
Made these today using the coconut flour version and baked them as muffins. PERFECTION! They were just fantastic.
Amazing! So happy to hear that.
excellent. I made this low carb by using sugar free syrup and sugar free chips. Delicious treat for any meal. Since we don’t eat bread, we like a weekend treat with our protein breakfasts.
Perfect! Glad those swaps worked out 🙂
This recipe is one of my favorites!! Any tips to stop the chocolate chips from falling to the bottom of the pan while it bakes? Thanks!
So glad you love it! Coat them with flour before adding to the batter and don’t over mix.
This recipe is one of my favorites!! Any tips to stop the chocolate chips from falling to the bottom of the pan while it bakes? Thanks!
My mouth is watering! These pictures are stunning!
Thanks Ryan!
Love this bread- can’t believe it’s grain free! I made it with one tbsp coconut flour and 1 scoop vegan protein powder, and almond butter so my daughter can take it to school for snack! Thank you!
Perfect! Glad you loved this one 🙂
Monique dearest,
So I’ve read your post twice and read all the comments to see if this has been addressed on this page but couldn’t see it mentioned anywhere.
Truth to be told I’ve always had this prob when trying out recipes that list “small / medium / large *insert fruit / veg here*”. I’m usually left frustrated when the recipe does not include tge measurement either in cups or in grams (the best) as I cannot guesstimate the size! Lol. Zucchinis sold here are always around 7″-8″ long and some are fairly fat and some are thinner.
So…. how much grated zucchini should I use here? 🙂 🙂
Hi! Thanks so much for your note – 1 medium zucchini will be about 1 cup shredded 🙂 I’ve updated the recipe as well. Enjoy!
Monique dearest,
So I’ve read your post twice and read all the comments to see if this has been addressed on this page but couldn’t see it mentioned anywhere.
Truth to be told I’ve always had this prob when trying out recipes that list “small / medium / large *insert fruit / veg here*”. I’m usually left frustrated when the recipe does not include tge measurement either in cups or in grams (the best) as I cannot guesstimate the size! Lol. Zucchinis sold here are always around 7″-8″ long and some are fairly fat and some are thinner.
So…. how much grated zucchini should I use here? 🙂 🙂
Hi! Thanks so much for your note – 1 medium zucchini will be about 1 cup shredded 🙂 I’ve updated the recipe as well. Enjoy!