Recently, one of my best friends from high school drove into town for a birthday celebration. On Sunday, the morning after the party, she stopped by my house for a short visit before rejoining her other circle of friends at a local brewery for lunch.
We spent part of our time catching up while sitting on my back patio in comfy wicker chairs (a belated thanks for that birthday present, Mom and Dad!). As we talked, I asked about her garden since she had been sharing plenty of pictures of her produce on Instagram lately… And because I needed ideas for my own patio space!
She quickly listed off her plants, including tomatoes, bell peppers, cucumbers, basil, chard… And a few winter things she planned to plant, like Brussels sprouts and kale and beets.
As I listened, soaking in her knowledge, I started envisioning my dream garden. Meyer lemon trees (I could basically eat these every single day!), basil, rosemary, tomatoes, cucumbers, lettuce, sweet potatoes (although that could be dangerous with my recipe for these!)…
And zucchini, so I could bake treats like these healthy double chocolate zucchini muffins! They literally taste like a cross between zucchini bread, muffins, and fudgy brownies. They’re full of rich chocolate flavor, a hint of cozy spices (trust me — chocolate + spices is the best thing in the whole world!), and lots of sneaky zucchini that keeps them extra moist.
They’re my new favorite breakfast… And easy to make! That’s basically the best possible combination, don’t you think??
KEY INGREDIENTS TO MAKE HEALTHY DOUBLE CHOCOLATE ZUCCHINI MUFFINS
Let’s talk about what you’ll need to make these healthy double chocolate zucchini muffins! Since you probably have baking staples like baking powder and salt already, we’ll stick with the more interesting ingredients.
Flour. To make these healthy muffins, you’ll start with white whole wheat flour. White whole wheat flour has the same health benefits as regular whole wheat flour, but a lighter taste and texture, which makes it perfect for these tender muffins. That lets their chocolate flavor and super moist texture shine!
Tip: If you’d like to make your healthy double chocolate zucchini muffins gluten-free, then see the Notes section of the recipe. I’ve included my recommendation there!
Cocoa powder. For the first chocolate component of these double chocolate muffins, you’ll need regular unsweetened cocoa powder. It’s also called natural unsweetened cocoa powder — and sometimes just unsweetened cocoa powder! To give these muffins a rich brownie-like flavor, you’ll use almost equal parts of cocoa powder and flour. I know it may seem like a lot… But it yields an incredible taste!
Hint: I don’t recommend substituting Dutched cocoa powder or special dark cocoa powder. These have different acidity levels, which affects the taste and texture of your muffins. Stick with regular unsweetened cocoa powder!
Spices. Perhaps a little surprising for chocolate muffins… But it just feels wrong to bake zucchini goodies without any spices! You’ll add cinnamon and a teensy bit of nutmeg. I love the way they make these muffins taste extra cozy and comforting!
Greek yogurt. To keep these healthy chocolate zucchini muffins low calorie, you’ll just use 1 tablespoon of butter or coconut oil. Yes — that’s all they need! The rest of their tender texture comes from Greek yogurt, one of my favorite ingredients in healthier baking. It adds the same moisture to the batter for a fraction of the calories, and it gives your muffins a protein boost too!
Sweetener. You’ll sweeten your muffins with another one of my favorite ingredients: liquid stevia. Stevia is a plant-based, no-calorie sweetener that contains nothing refined or artificial (aka it’s clean eating friendly!), and it’s highly concentrated. You just need 1 ½ teaspoons for all 12 muffins!
This is the kind I use because I love its sweet flavor and don’t notice any strange aftertaste like with some other stevia products. Although you can find it at many health-oriented grocery stores, I buy mine online here because that’s the cheapest price I’ve found. (And you’ll use it in all of these recipes of mine, too!)
Tip: Many stevia brands and products have different sweetness levels, so they’re not necessarily 1-for-1 substitutes for each other. For the best flavor and results, I highly recommend using the same one that I do!
Zucchini. Still with me? Just a couple more important ingredients! It’d be impossible to make these muffins without… Freshly grated zucchini. (No surprises here!) Use the standard-size holes of a box grater to grate it.
Tip: Resist any urge to add more zucchini to the batter! That throws off the ratio of wet and dry ingredients, and it can lead to your muffins collapsing and turning out overly wet or dense inside.
Mini chocolate chips. Time for the second chocolate component: mini chocolate chips! I love using mini ones because their smaller size ensures every bite contains multiple morsels of chocolate. These are my current favorite because they taste so rich and turn beautifully gooey and melty in the oven!
HOW TO MAKE HEALTHY DOUBLE CHOCOLATE ZUCCHINI MUFFINS
Does anything beat the aroma of freshly baked chocolate treats?? You’ll be able to tell me soon… So let’s cover how to make the best ever chocolate zucchini muffins to give you a chance to report back!
Measure correctly. It’s extremely important to measure the flour and cocoa powder correctly, using this method or a kitchen scale. Too much of either will dry out your muffins and make them taste bitter, rather than deliciously rich and chocolaty.
Tip: This is the affordable kitchen scale that I own, and it has been the best money I’ve ever spent! I use it to make every recipe that I share with you because it ensures my treats turn out with the perfect taste and texture every time.
Thoroughly dry the zucchini. It may sound a bit strange, but this is a key step in all of my zucchini-filled baking recipes! After freshly grating the zucchini, you’ll pat it dry with paper towels to remove as much moisture as possible. Otherwise, that moisture would get released into the batter while the muffins bake… Which would add too much liquid and cause your muffins to collapse while cooling.
It only takes a couple of minutes, but it makes a huge difference. By thoroughly drying the zucchini, your healthy chocolate zucchini muffins will turn out perfectly moist — and a bit fudgy, like brownies!
Alternating additions. This is a trick many bakers turn to for cake batter, and I’ve found it works really well for muffins and quick breads too. You’ll alternate between adding the flour mixture and the milk to the bowl. This helps guard against overmixing (which often creates a tough, gummy, or rubbery texture!). By using alternating additions, and gently folding in each portion, your healthy chocolate zucchini muffins will turn out perfectly soft and tender!
Bake. It’s time! …well, almost. Just before baking, I like to press a few mini chocolate chips into the top of each muffin. I think it’s a pretty finishing touch — and makes them look even more tempting!
Then slide your muffins into the oven, set a timer, and wait… Impatiently, if you’re anything like me! They’ll be done when the tops feel firm to the touch and a toothpick inserted into the center comes out clean or with a few crumbs attached.
How amazing do those look?? As a chocoholic… I’m always a big fan of brownie-like breakfasts! 😉 And when you make your own, remember to snap a picture and share it on Instagram using #amyshealthybaking and tagging @amyshealthybaking IN the photo itself! (That guarantees I’ll see your picture! 🙂 ) I’d love to see your healthy double chocolate zucchini muffins!

Healthy Double Chocolate Zucchini Muffins
Ingredients
- 1 ¼ cups (150g) white whole wheat flour or gluten-free* flour (measured like this)
- ¾ cup (60g) unsweetened cocoa powder (measured like this)
- 2 tsp baking powder
- 1 ½ tsp ground cinnamon
- ½ tsp ground nutmeg
- ¼ tsp salt
- 1 tbsp (14g) coconut oil or unsalted butter, melted and cooled slightly
- 2 large egg whites, room temperature
- 2 tsp vanilla extract
- 1 ½ tsp liquid stevia (see Notes!)
- ½ cup (120g) plain nonfat Greek yogurt
- ¾ cup + 2 tbsp (210mL) nonfat milk, divided
- 1 ½ cups (160g) grated zucchini, patted dry (see Notes!)
- 3 ½ tbsp (49g) miniature chocolate chips, divided
Instructions
- Preheat the oven to 350°F, and coat 12 muffin cups with nonstick cooking spray.
- In a medium bowl, whisk together the flour, cocoa powder, baking powder, cinnamon, nutmeg, and salt. In a separate bowl, whisk together the coconut oil or butter, egg whites, vanilla extract, and stevia. Stir in the Greek yogurt, mixing until no large lumps remain. Stir in 2 tablespoons of milk. Alternate between adding the flour mixture and remaining milk, beginning and ending with the flour mixture, and stirring just until incorporated. (For best results, add the flour mixture in 4 equal parts.) Gently fold in the zucchini and 3 tablespoons of mini chocolate chips.
- Divide the batter between the prepared muffin cups, and gently press the remaining chocolate chips into the tops. Bake at 350°F for 22-25 minutes or until the tops are firm to the touch. Cool in the muffin cups for 10 minutes before carefully transferring to a wire rack.
Notes
View Nutrition Information + Weight Watchers Points
You may also like Amy’s other recipes…
♡ The Ultimate Healthy Chocolate Muffins
♡ The Ultimate Healthy Zucchini Muffins
♡ Healthy Chocolate Chip Zucchini Mini Muffins
♡ The Ultimate Healthy Zucchini Bread
♡ Healthy Zucchini Banana Bread
♡ Healthy Chocolate Chip Zucchini Bread
♡ Healthy Zucchini Oatmeal Cookies
♡ …and the rest of Amy’s healthy muffin recipes and healthy zucchini-filled recipes!










Amy what is crime stevia and where so I look for it in my store? I am gluten and dairy free is there anything else I could use in place of the Greek yogurt
Thank You for any help.
I really appreciate your interest in my recipe Jan! I go over what vanilla creme stevia is and where to find it in the text of my blog post above the recipe. 🙂 Non-dairy yogurt can be used in place of the Greek yogurt. I can’t wait to hear what you think of these muffins!
These look super yummy Amy !!! But I’m out of vanilla crème stevia. : (
How much dry stevia should I use instead?
Many thanks
Kimberly
I really appreciate your interest in my recipe Kimberly! What’s the brand and exact product you’d like to sub? (Every brand is slightly different, so I want to make sure I give you the right amount! 🙂 )
Thank you so much for your help!
I use SweetLeaf Stevia Sweetener powder from a 4 ounce container.
It’s my pleasure, Kimberly! You’ll need 1 ½ tablespoons of that powdered stevia. I recommend whisking it into the flour mixture so it doesn’t clump! 🙂 I can’t wait to hear how your muffins turn out!
This trick worked perfectly ! I whisked the dry stevia into the flour…no lumps.
They are wonderfully moist and full of chocolate..what a fantastic breakfast treat to enjoy while sitting on the beach on the beautiful Outer Banks of NC and watching the dolphins swim by : )
I’m so glad you loved these muffins Kimberly!! That sounds like such a peaceful morning… I wish I could watch dolphins outside of my window too! 🙂
YUM, these look SOO good! LOVED visiting with you!! So glad it worked out!! <3 I will definitely be planting zucchini in my garden next year, too!
Aww, thanks so much sweet pea!! Hopefully I’ll have a small garden up and running by next summer too! 😉 I bet your zucchini will taste absolutely amazing!!
I’m always on the hunt for good zucchini recipes – these look perfect! And your pictures are seriously beautiful – love those crinkled tops!
Thanks Melissa! 🙂 I’d love to hear what you think if you try these muffins!
Hi Amy!
I was wondering if you could oat flour instead of whole wheat?
I don’t recommend it Goatu! It’ll make these muffins overly dense. 🙂 I’d love to hear what you think if you try them!
I am trying to create a 5-6 protein muffin options for customers. What tweaks would I need to use to this recipe in order to add chocolate whey protein powder to it? Are there anymore recipes you have that are great to make Protein Muffins?
These are incredibly sensational; much preferred over regular, super fatty albeit delicious chocolate muffins. I didn’t feel leaden or guilty after eating these. I posted an Instagram photo and inserted the text you wanted, but it’s the first Instagram photo I’ve ever attempted, so who knows if I did everything right. A couple of personal preference substitutions I made: whole wheat pastry flour (not white whole wheat), your recommended maple syrup for the Stevia, carob powder for the cocoa (1:1), and carob chips for the chocolate chips. I was worried about changing the texture and moistness of the original recipe, but this didn’t happen. These came out perfectly. These, Amy, are genius!
I’m so glad you enjoyed these muffins Linda! That really means a lot to me! I haven’t seen your photo come through on Instagram… Is your profile set to private? If so, then I’m afraid I won’t be able to see your picture unless you switch your profile to public. I’d love to see your muffins! 🙂
You were right. The account was marked Personal, which I corrected. Let me know if somehow i didn’t include my picture correctly, and I’ll try again.
I saw your picture!! Your muffins look beautiful! Thank you SO much for turning your profile to public so I could see your picture. That means a lot to me Linda! 🙂 I’m so excited to see what other recipes of mine that you try!
I made these yesterday with a combination of buckwheat (3/4 cup) and Rice flour (1/4 cup) and oats (1/4 cup), and they turned out great! I didn’t use any xanthan gum or a binder besides the one egg I used. Recommended for a gluten free option!
I’m so glad you enjoyed these muffins Anna! Thanks so much for letting me know the gluten-free modification that you used — I always love hearing what tweaks work! 🙂
Hi Amy,
I really want to make these muffins! Just a question, If i used a sweetened greek yoghurt will i still need to add some stevia? (does plain stevia work just as well?)
Thanks for your help!
Laura
I’m always happy to help Laura! 🙂 Yes, you’ll still need to use the stevia, even with sweetened Greek yogurt. What’s the exact brand and product that you’d like to substitute in place of the vanilla stevia that I used? Each brand (and product) generally tends to have a slightly different sweetness level! If it’s the same brand, then the plain version is a 1-to-1 substitute for the vanilla version. If it’s a different brand, then let me know the brand and product name, and we’ll figure out how much you’ll need to use!
Hi Amy
Thanks for your reply. The brand of stevia i have is hermesetas. Do i need to add some vanilla with it too?
Laura
It’s my pleasure Laura! The Hermesetas stevia that I found is in tablet form, which is a form I don’t actually use in my baking. (Liquid or granulate is much easier for baking and measuring!) Is that true for the product you have?
These did not work out well for me. Maybe I did something wrong. I didn’t have any stevia so I used the recommended amount of sugar instead, but the batter was so bitter, so I had to add a lot extra sugar and still it wasn’t very sweet. I think if I made it again, I would leave out the spices, especially the nutmeg. I just don’t think they go well with it and the nutmeg leaves a horrible aftertaste. Maybe it’s all my fault, I’m willing to accept that, haha, but they just didn’t work out for me.
I’m honored that you tried my recipe, Ellie! That sounds disappointing and not like how these muffins are supposed to turn out at all, so I’d love to help figure out what happened with your batch! 🙂
Did you make any other substitutions or modifications, besides using granulated sugar? How much granulated sugar and milk did you use? (I didn’t include sugar as a recommended option in the Notes section, so I’m not sure how much you used and want to confirm that detail!)
Did you use a kitchen scale or measuring cups to measure all of your ingredients (especially the flour, cocoa powder, and milk!)? If the latter, can you describe in detail how you used them?
I know I just asked a LOT of questions, but I’ll have a much better idea of the potential culprit once I know your answers to all of them! 🙂