Super Moist Double Chocolate Zucchini Bread Recipe

This chocolate chip zucchini bread is an absolute dream for chocolate lovers! It’s super moist and sneaks in some hidden veggies, making it a delicious way to enjoy chocolate while getting a little extra nutrition.

Honestly, zucchini in a sweet bread? Yes, please! I love making this for breakfast or as a quick snack—the moistness is unbeatable. Plus, it’s the perfect excuse to enjoy chocolate any time of day! 😄

If you’re craving chocolate but want to slip some veggies into your baking, this chocolate chip zucchini bread is going to be your new favorite. It blends rich unsweetened cocoa powder with melty chocolate chips for a seriously chocolatey treat. Meanwhile, the grated zucchini keeps the loaf tender and super moist—no zucchini flavor to worry about.

This recipe delivers a soft crumb filled with gooey chocolate, perfect for breakfast, an afternoon pick-me-up, or a simple dessert. It’s flexible and forgiving, with easy swaps for flour, dairy, and mix-ins. Plus, it’s great for making ahead or freezing for those busy mornings.

You’ll spend about 15 minutes prepping and around 55 to 65 minutes baking, for about an hour and a half total including cooling time. Below, you’ll find the full list of ingredients, step-by-step instructions, plus my top tips to keep your chocolate chip zucchini bread moist and flavorful along with some tasty swap ideas.

What Makes It So Good

This chocolate chip zucchini bread is spot-on when you want rich chocolate flavor paired with a tender, moist crumb and a little veggie boost. It’s easy to make, adaptable to what you have on hand, and works perfectly as a breakfast bread, snack, or dessert. Prefer a classic loaf without chocolate? Try this moist old-fashioned zucchini bread.

• Wonderfully moist thanks to grated zucchini and sour cream or Greek yogurt.
• Double the chocolate fun with unsweetened cocoa in the batter plus chocolate chips.
• Hidden veggies: a clever way to sneak in zucchini (or even grated carrots) that everyone will like.
• Super flexible recipe with easy flour, dairy, and mix-in swaps—especially if you’re looking for a gluten-free zucchini bread.
• Perfect for making ahead and freezing so you’re ready for busy mornings or packed lunches.

Ingredients and Best Substitutes

• 1 ½ cups all-purpose flour
• ½ cup unsweetened cocoa powder
• 1 teaspoon baking soda
• ½ teaspoon baking powder
• ¼ teaspoon salt
• 2 large eggs
• 1 cup granulated sugar
• ½ cup brown sugar, packed
• ⅓ cup vegetable oil
• 1 teaspoon vanilla extract
• 1 ½ cups grated zucchini (about 1 medium zucchini, finely grated and excess moisture squeezed out)
• ½ cup sour cream or plain Greek yogurt
• 1 cup semisweet chocolate chips (plus extra for topping)

How to Bake the Bread

1. Preheat oven to 350°F (175°C) and grease a 9×5-inch loaf pan or line with parchment paper.
2. Grate zucchini finely and squeeze out excess moisture with a towel.
3. Whisk together all-purpose flour, unsweetened cocoa powder, baking soda, baking powder, and salt in a medium bowl until combined.
4. Beat eggs with granulated sugar and packed brown sugar in a large bowl until light and fluffy.
5. Add vegetable oil and vanilla extract to the egg mixture and mix until smooth.
6. Stir in sour cream (or Greek yogurt) and the drained grated zucchini until evenly distributed.
7. Gradually add the dry ingredients to the wet ingredients, stirring gently until just combined (do not overmix).
8. Fold in semisweet chocolate chips, reserving a handful to sprinkle on top.

9. Pour batter into the prepared loaf pan, smooth the surface, and sprinkle reserved chocolate chips on top.

10. Bake 55–65 minutes, checking at 55 minutes; a toothpick inserted in the center should come out with moist crumbs but no wet batter.
11. Cool the loaf in the pan for about 10 minutes, then transfer to a wire rack to cool completely before slicing.

Pro Tips for Maximum Moisture

Getting this chocolate chip zucchini bread perfectly moist starts with a few little tricks, and I’ve got you covered:

• Grate your zucchini finely and squeeze out as much juice as possible with a clean towel to keep the batter from being too wet. For a quick look at ideal zucchini prep, see our Moist Garden Zucchini Bread recipe.
• Stop mixing as soon as the wet and dry ingredients are combined—overmixing makes the bread tough, and nobody wants that. For an easy, gentle method, try this one-bowl zucchini bread with cinnamon streusel.
• Keep an eye on baking time, and start checking for doneness at 55 minutes. A toothpick should come out with just a few moist crumbs.
• Let your bread cool in the pan for 10 minutes first to help it set, then move it to a wire rack so it doesn’t get soggy on the bottom.

Mix-Ins, Swaps, and Add-Ins

This chocolate chip zucchini bread is super adaptable, so don’t hesitate to switch things up based on what you have or like!

If you want a heartier loaf, swap all-purpose flour for whole wheat flour—just remember it’ll be a bit denser and nuttier but still delicious. Or try these oatmeal zucchini muffins for a wholesome, hearty texture.

Want some crunch? Toss in chopped walnuts or pecans. Dried fruit like raisins or shredded coconut can add fun textures and extra flavor too. Just keep your total mix-in volume about the same as the chocolate chips called for.

No zucchini? No problem! Grated carrots make a great sweet substitute, or mashed bananas will add moisture and their own unique flavor—see how in these chocolate banana oatmeal muffins.

Storing, Freezing, and Reheating

Store leftover chocolate chip zucchini bread in an airtight container at room temperature for up to 3 days. For longer storage, wrap it tightly in plastic wrap and freeze for up to 3 months. When you’re ready to enjoy, just thaw it at room temperature. If you want to warm a slice, a quick zap in the microwave or a few minutes in a low oven works wonders! These same storage and reheating tips also work perfectly for our moist cinnamon swirl zucchini bread, so you can prep an extra loaf for later.

Answers to Common Questions

• Can I use whole wheat flour instead of all-purpose? Yes! Whole wheat works great but will create a denser, nuttier loaf. You can swap 1:1, just expect a firmer texture.
• How should I store leftover bread? Keep it in an airtight container at room temp for 3 days. For longer, wrap tightly and freeze for up to 3 months. Thaw before serving.
• Can I add nuts or other mix-ins? Absolutely! Chopped walnuts or pecans, dried fruit, or shredded coconut all make great add-ins. Just keep the total mix-in volume similar to 1 cup of chocolate chips. For a crumb-topped variation idea, see these zucchini coffee cake muffins.
• What if I don’t have zucchini? Try grated carrots or mashed bananas instead—or try our cottage cheese banana bread for a banana-forward loaf. The flavor will change slightly, but it will still be delicious!
• How do I avoid a soggy loaf? Grate the zucchini finely and squeeze out excess liquid with a towel before mixing. Also, don’t overmix after adding flour.
• Can I make this dairy-free or swap sour cream? Sure! Use unsweetened applesauce for a lighter version or non-dairy yogurt for dairy-free. Buttermilk can be another tasty swap.
• How do I know when it’s done baking? A toothpick inserted into the center should come out with moist crumbs but no wet batter. If it browns too fast, tent with foil for the last 10–15 minutes.