Chocolate Chip Zucchini Muffins: Moist 1-Bowl Recipe
These chocolate chip zucchini muffins are what I bake every time a neighbor leaves another giant zucchini on my porch. One medium zucchini gets grated right into the batter, along with brown sugar, cinnamon, a scoop of Greek yogurt and plenty of chocolate chips. They bake up tall, soft and super moist, and the zucchini quietly keeps them tender for days without changing the flavor.
Everything mixes in one bowl, no mixer needed, and a batch of 12 costs me about $5.50. That’s under 50 cents a muffin, which is much cheaper than any coffee shop muffin and honestly tastier.
Prep: 15 minutes | Cook: 20 minutes | Total: 35 minutes | Serves: 12 | Diet: vegetarian
Why You’ll Love These Chocolate Chip Zucchini Muffins
- Moist. Zucchini and yogurt keep them soft for days.
- One bowl. Just a whisk and a spatula.
- Kid friendly. Chocolate chips win over even picky eaters.
- Budget friendly. A great way to use cheap or homegrown zucchini.
- Freezer friendly. Bake once and enjoy for weeks.
What Makes Chocolate Chip Zucchini Muffins So Moist?
Zucchini is about 95 percent water, and as it bakes it releases that moisture right into the crumb. That’s why zucchini muffins stay soft long after they cool, while plain muffins can turn dry by the next morning. I squeeze the grated zucchini just a little, so the batter isn’t soupy but still gets plenty of moisture. Oil instead of butter helps too, since oil stays liquid at room temperature and keeps the texture tender. Brown sugar adds a deeper, caramel-like sweetness and holds on to moisture, and a little Greek yogurt brings richness and a slight tang that balances the chocolate. Finally, a hot start in the oven gives these chocolate chip zucchini muffins tall, bakery-style domes.
Ingredients for Chocolate Chip Zucchini Muffins
You’ll need a 12-cup muffin pan, a box grater and one large mixing bowl.
Dry Ingredients
- 1 3/4 cups all-purpose flour (220g)
- 1 teaspoon baking soda and 1/2 teaspoon baking powder
- 1/2 teaspoon salt
- 1 1/2 teaspoons ground cinnamon
Wet Ingredients
- 2 large eggs, room temperature
- 2/3 cup packed light brown sugar (135g)
- 1/2 cup neutral oil, such as vegetable or canola (120ml)
- 1/3 cup plain Greek yogurt or sour cream (80g)
- 2 teaspoons vanilla extract (10ml)
- 1 1/2 cups grated zucchini, about 1 medium, lightly squeezed (190g)
- 1 cup semisweet chocolate chips, divided (170g)
Ingredient Notes
Zucchini: No need to peel it. The green flecks look pretty, and the skin melts into the crumb. Yellow summer squash works too.
Brown sugar: Light or dark both work. Dark brown sugar gives a slightly richer flavor.
Oil: Any neutral oil is fine. Melted butter works but makes a slightly drier muffin.
Greek yogurt: Plain whole milk or low-fat yogurt, or sour cream, all work.
Chocolate chips: Semisweet is classic. Mini chips spread more evenly, and dark chocolate chunks make them less sweet.
How to Make Chocolate Chip Zucchini Muffins
- Heat the Oven. Heat the oven to 400F (200C). Line a 12-cup muffin pan with paper liners or grease it well.
- Prep the Zucchini. Grate the zucchini on the large holes of a box grater. Squeeze it gently in a towel to remove some liquid, but leave it a little damp.
- Mix the Wet Ingredients. In a large bowl, whisk the eggs and brown sugar until smooth. Whisk in the oil, yogurt and vanilla, then stir in the zucchini.
- Add the Dry Ingredients. Sprinkle the flour, baking soda, baking powder, salt and cinnamon over the bowl. Fold with a spatula just until no dry flour remains.
- Add the Chocolate. Fold in 3/4 cup of the chocolate chips. Save the rest for the tops.
- Fill the Pan. Divide the batter among the 12 cups, filling them nearly to the top. Sprinkle the remaining chips over the batter.
- Bake. Bake at 400F for 5 minutes, then lower the oven to 350F (175C) without opening the door and bake 14 to 16 minutes more, until domed and a toothpick comes out with only melted chocolate.
- Cool. Cool in the pan for 5 minutes, then move the muffins to a wire rack.
Tips for Perfect Zucchini Muffins
Grate on the large holes. Big shreds keep their texture. Fine shreds turn mushy.
Squeeze lightly. Press out a couple of tablespoons of liquid, but don’t wring the zucchini bone dry, or the muffins lose their moisture.
Don’t overmix. Fold just until the flour disappears. Overmixing makes muffins tough and full of tunnels.
Fill the cups high. Nearly full liners give you those big domed tops.
Use the hot start. Five minutes at 400F gives a burst of rise, then the lower heat bakes the center through without burning the bottoms.
Making Them a Little Healthier
Many people search for healthy zucchini muffins with chocolate chips, and it’s easy to lighten these up a bit. Swap half the all-purpose flour for white whole wheat flour, cut the brown sugar to 1/2 cup and use mini chocolate chips so a smaller amount still reaches every bite. You can also replace a quarter of the oil with unsweetened applesauce. The muffins will be slightly denser but still moist. Adding vegetables to baked goods won’t turn them into health food, but it’s a fun way to get a little more produce into your day. The Harvard T.H. Chan School of Public Health explains why variety matters in its guide to vegetables and fruits.
How Much Zucchini Do You Need?
One medium zucchini, about 7 to 8 inches long, gives you roughly 1 1/2 cups of loosely packed shreds, which is exactly what this recipe needs. If you only have a giant garden zucchini, cut it in half lengthwise and scoop out the seedy middle first, since that part is watery and a little bitter. Measure the shreds before you squeeze them, and don’t pack them into the cup. Extra zucchini freezes well, so I grate the whole thing and freeze the leftovers in 1 1/2 cup bags, labeled and ready for the next batch of chocolate chip zucchini muffins.
When to Serve Them
I bake these on Sunday and they cover breakfast all week. Warm one up and serve it with a boiled egg and some fruit for a quick weekday breakfast, or pack one in a lunchbox next to a cheese stick. They also make a cozy afternoon snack with a cup of tea, and a plate of chocolate chip zucchini muffins is always welcome at a brunch or bake sale.
Easy Variations
- Double chocolate: Replace 1/4 cup of the flour with cocoa powder.
- Nutty: Fold in 1/2 cup of chopped walnuts or pecans.
- Mini muffins: Bake in a mini muffin pan at 350F for 10 to 12 minutes.
- Bread: Bake the batter in a greased 9×5-inch loaf pan at 350F for 50 to 60 minutes.
- Streusel: Top with a quick cinnamon crumb before baking.
What This Recipe Costs
Here’s what I paid this fall: zucchini $1.00, flour $0.35, brown sugar $0.45, eggs $0.55, oil $0.40, Greek yogurt $0.50, chocolate chips $1.80, vanilla, spices and leaveners about $0.45. That’s around $5.50 for 12 chocolate chip zucchini muffins.
More Muffins to Try
If you love a good muffin as much as I do, try my soft bakery-style chocolate chip muffins for a classic version without veggies, or my gluten free pumpkin muffins for fall. For another sweet way to use zucchini, my frosted zucchini spice bars are a family favorite.
Storage and Freezing
Counter: Keep cooled chocolate chip zucchini muffins in an airtight container lined with a paper towel for up to 2 days. The towel absorbs extra moisture so the tops don’t get sticky.
Fridge: Store for up to 5 days. Warm for 10 to 15 seconds in the microwave before eating.
Freezer: Freeze cooled muffins in a freezer bag for up to 3 months. Thaw on the counter overnight or microwave for about 30 seconds.
Frequently Asked Questions
Do I need to peel the zucchini?
No. The skin is soft and adds pretty green flecks. Just wash it and trim the ends.
Why are my zucchini muffins soggy?
The zucchini was too wet, or the muffins were underbaked. Squeeze out a little liquid and bake until a toothpick comes out clean.
Can I use frozen zucchini?
Yes. Thaw it, drain it and squeeze out the extra liquid, since frozen zucchini releases more water than fresh.
Can I make these chocolate chip zucchini muffins gluten free?
Yes. Use a 1-to-1 gluten free baking flour that contains xanthan gum. Let the batter rest for 10 minutes before baking.
How do I know when the muffins are done?
The tops spring back when pressed and a toothpick comes out clean or with only melted chocolate on it.
Bake a Batch This Week
These chocolate chip zucchini muffins are moist, chocolatey and an easy way to sneak in a vegetable. One bowl, simple ingredients and 35 minutes are all it takes. For more morning bakes, browse my breakfast recipes.
If these muffins helped you use up a zucchini, share the recipe with a friend who has a garden, and follow me on Pinterest for more cozy baking. After you bake them, scroll down to the recipe card and leave a star rating, then tell me in the comments which variation you tried. Happy baking!
