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If your garden is overflowing with zucchini, these double chocolate zucchini muffins are exactly what you need. They’re rich, fudgy, incredibly moist, and packed with melty chocolate chips, so much so that no one will ever guess there’s a vegetable hiding inside.

We make these every summer when zucchini season rolls around, and somehow they disappear faster than I can bake them. Between the rich chocolate flavor and unbelievably soft texture, no one ever suspects they’re packed with zucchini. They’re easy to make, freezer-friendly, and the perfect excuse to have chocolate for breakfast.
Why You’ll Love These Chocolate Zucchini Muffins

- Rich and fudgy like chocolate cake
- No mixer required
- Perfect way to use fresh garden zucchini
- Extra moist thanks to the zucchini
- Freezer-friendly
- Kid-approved
- Ready in under an hour
- Better than bakery muffins
- No one will ever guess there’s zucchini inside
- Perfect for breakfast, snacks, or dessert

Ingredients You’ll Need
You only need a handful of pantry staples plus fresh zucchini to make these rich and fudgy muffins.
- Zucchini: Keeps the muffins incredibly moist without adding vegetable flavor.
- Eggs: Help bind the batter together while creating a tender crumb.
- Granulated Sugar: Sweetens the muffins and keeps them soft.
- Brown Sugar: Adds moisture and a hint of caramel flavor.
- Oil: Makes these muffins stay soft for days.
- Vanilla Extract: Enhances the rich chocolate flavor.
- Sour Cream: Adds richness and keeps the crumb extra tender.
- Flour: Gives the muffins structure without making them heavy.
- Cocoa Powder: Gives the muffins their rich chocolate base.
- Baking Soda: Helps the muffins rise and stay tender.
- Baking Powder: Gives the muffins extra lift.
- Salt: Balances the sweetness and makes the chocolate shine.
- Chocolate Chips: Melt into gooey pockets of chocolate throughout every muffin.
How to Make Double Chocolate Zucchini Muffins
These double chocolate zucchini muffins come together with just one bowl, a whisk, and a spatula. Here’s a quick overview of the process:
- Mix the Wet Ingredients: Whisk together the eggs, sugars, oil, vanilla, sour cream, and shredded zucchini.
- Add the Dry Ingredients: Stir in the flour, cocoa powder, baking soda, baking powder, and salt until just combined.
- Fold in the Chocolate Chips: Gently fold the chocolate chips into the batter with a rubber spatula.
- Fill and Bake: Divide the batter between muffin cups, filling each nearly full. Sprinkle extra chocolate chips on top if desired, then bake until a toothpick comes out with just a few moist crumbs.
- Cool: Let the muffins rest in the pan for a few minutes before transferring them to a wire rack.

Variations
- Add chopped walnuts or pecans.
- Use dark chocolate chips.
- Swap milk chocolate chips.
- Add espresso powder to intensify the chocolate.
- Sprinkle flaky sea salt over the tops.
How to Prep Zucchini for Muffins
Don’t Peel It. The skin is thin and softens as the muffins bake, so there’s no need to peel your zucchini.
Don’t Squeeze It Dry. Unlike some zucchini recipes, you want all that moisture here. It helps create soft, tender muffins.
Shred It Finely. Use the small holes on a box grater so the zucchini disappears into the batter.
Freeze It for Later. Shred extra zucchini and freeze it in measured portions for baking all year long.

Tips for the BEST Double Chocolate Zucchini Muffins
- Don’t overmix the batter or the muffins can become dense.
- Fill the muffin cups almost to the top for tall bakery-style muffins.
- Sprinkle extra chocolate chips over the tops before baking.
- Let the batter rest for 15–20 minutes if you have time for even taller domes.
- Allow the muffins to cool for a few minutes before removing them from the pan.
Storage Tips
Store in an airtight container at room temperature for up to 4 days or in the refrigerator for up to 1 week. Freeze for up to 3 months.
Warm one in the microwave for about 15 seconds for that fresh-from-the-oven taste.

Chocolate Zucchini Muffin FAQs
No. The peel softens during baking and blends right into the muffins.
Not for this recipe. The moisture is what keeps the muffins soft and fudgy.
Absolutely! Freeze in an airtight container for up to 3 months.
Yes! Frozen shredded zucchini works great in these muffins. Thaw it first and gently stir any released juices back into the zucchini before adding it to the batter. Those extra juices help keep the muffins moist.
Dry muffins are usually caused by overbaking or adding too much flour. Be sure to measure the flour correctly by spooning it into the measuring cup and leveling it off, and remove the muffins from the oven as soon as a toothpick comes out with a few moist crumbs attached.
Absolutely! Fill mini muffin tins about ¾ full and start checking for doneness after 10–12 minutes. Since oven times vary, keep an eye on them and bake until a toothpick comes out with a few moist crumbs.
Yes! Head to our Double Chocolate Zucchini Bread post for the full recipe!

These double chocolate zucchini muffins are proof that zucchini belongs in dessert just as much as it does in dinner. Rich, moist, and loaded with chocolate, they’re the perfect way to use up summer zucchini while giving everyone an excuse to eat chocolate for breakfast. Don’t be surprised if no one ever guesses there’s a vegetable hiding inside!
More Easy Muffin Recipes:
- Blueberry Muffins
- Cranberry Sauce Muffins
- Chocolate Chip Cookie Muffins
- Mom’s BEST Zucchini Muffins
- Banana Bread Muffins
- ALL OF OUR SWEET BREAKFAST RECIPES!






These are divine. I even added a couple tablespoons of ground flax seed for extra nutrition for my boys. They turned out amazing – super moist and decadent. Wouldn’t even know there was zucchini in it if I hadn’t baked it myself!
Hi Megan!! Thank you so much!
Fantastic!
Thank you!!
Hi! Did you update or change this recipe? If so, the previous was our favorite! We tried this recipe and the muffins did not turn out nearly as well. If I’m confused I apologize but if I’m not I’d love to have a copy of the old recipe!
Hi Amanda! Yes, we updated it because it was an old recipe from a guest contributor. We no longer have the old recipe. I’m so sorry!
One of us has had too much apple juice, I do not see any mention of milk in recipe. Help please
Hi Doty! I’m not sure what milk you are referring to. Milk is not listed in the ingredients or mentioned in the instructions. Let me know how I can help!
Can I substitute the Greek yogurt for sour cream? Would it be an even swap?
Yes, you can make that swap. You don’t want nonfat Greek yogurt though. It’s the fat in the sour cream that makes the muffins so moist and delicious.
Will all purpose whole wheat work as well as white whole wheat?
Thanks in advance!!
Yes, it should work just fine. Same measurement!
Will these muffins be just as good the next day?I really want to make them and share them with the staff the next day 🙂
Yesssss! So good! If I don’t grab one to eat while it’s still warm then I almost prefer them the next day.
The zucchini muffins are awesome! I did substitute buttermilk for the yogurt only because that’s what I had.they turned out great😋
Thanks for the tip, Charlotte!! So glad you enjoyed them!
Beautiful muffins.. Excellent Recipe.
Thank you Debbie! We sure love them!
Oh too ironic…I was recipe testing chocolate zucchini bread this past weekend using up zucchini from my garden! These look so delicious 🙂