The first time I baked double chocolate zucchini bread, I expected a vegetable-forward loaf — instead I got something intensely chocolatey with a whisper of green beneath. It slices like a dessert but can pass for breakfast, snack, or a potluck showstopper. Moist, tender crumb and pockets of melted chocolate make it a reliable crowd-pleaser, especially when you want to hide veggies in plain sight.
Why you’ll love this loaf
This double chocolate zucchini bread is rich without being heavy. It’s an easy way to add a serving of veggies to a treat, and it’s forgiving: the batter tolerates small measurement changes and a little extra zucchini. Make it for a weeknight baking fix, a school-safe treat (baked through), or to turn into elegant party slices with mascarpone.
“Moist, intensely chocolatey, and kids asked for seconds — the zucchini is the magic trick.” — a quick reader review
What makes it special
- Double chocolate: Dutch-process cocoa in the batter plus semisweet chips for melty pockets.
- Moistness from shredded zucchini and oil, not butter — the crumb stays soft several days.
- Quick to mix: no creaming required, just combine wet and dry separately and fold.
How this recipe comes together (step-by-step overview)
- Shred and lightly squeeze the zucchini to remove excess moisture. This keeps the loaf from becoming gummy.
- Whisk the wet ingredients (sugars, oil, eggs, vanilla, zucchini) until smooth.
- Combine dry ingredients (flour, cocoa, leaveners, salt), then fold them into the wet mix just until incorporated.
- Stir in chocolate chips and any optional add-ins.
- Bake in a greased loaf pan until a tester comes out clean or with a few moist crumbs.
- Cool briefly in the pan, then transfer to a rack to finish cooling before slicing.
What you’ll need
- 1 cup shredded zucchini (about 1 medium zucchini; squeeze lightly to remove excess water)
- 1 cup all-purpose flour (substitute: 1:1 gluten-free cup-for-cup blend)
- 1/2 cup Dutch-process cocoa powder (natural cocoa will work but flavor and rise differ)
- 1 cup granulated sugar (or 3/4 cup sugar + 1/4 cup honey; reduce liquid slightly if using honey)
- 1/2 cup packed brown sugar
- 1/2 cup vegetable oil (or melted coconut oil; applesauce can replace half the oil for lower fat)
- 2 large eggs, room temperature (for vegan: 2 flax eggs—2 tbsp ground flax + 6 tbsp water)
- 1 teaspoon vanilla extract
- 1 teaspoon baking soda
- 1/2 teaspoon baking powder
- 1/4 teaspoon salt
- 1 cup semisweet chocolate chips (plus extra for sprinkling on top)
- Optional: 1/2 cup chopped nuts (walnuts or pecans), 1/2 teaspoon cinnamon or espresso powder for depth
Notes on ingredients
- Using Dutch-process cocoa gives a mellower, less acidic chocolate note and works well with neutral leavening (baking powder + baking soda). If you use natural cocoa, consider adding a tiny splash of buttermilk or decrease baking soda by a pinch.
- Shred zucchini on the large holes of a box grater or pulse in a food processor. Measure after shredding.
Step-by-step instructions
- Preheat your oven to 350°F (175°C). Grease a 9×5-inch loaf pan and line it with parchment for easier removal.
- Shred the zucchini and place it in a clean kitchen towel. Squeeze out a few tablespoons of moisture; you want it damp, not dripping.
- In a large bowl, whisk together the granulated sugar, brown sugar, oil, eggs, and vanilla until smooth.
- Add the shredded zucchini to the wet mixture and stir to combine.
- In another bowl, sift (or whisk) together the flour, cocoa powder, baking soda, baking powder, and salt.
- Gradually add the dry ingredients to the wet ingredients. Stir with a spatula until just combined — a few streaks of flour are okay. Do not overmix.
- Fold in the chocolate chips and any optional nuts or spices.
- Pour the batter into the prepared loaf pan and smooth the top. Sprinkle a few extra chocolate chips on top if desired.
- Bake 50–60 minutes, rotating the pan halfway through if your oven cooks unevenly. Start checking at 45 minutes. A toothpick inserted into the center should come out with a few moist crumbs (not wet batter). The internal temperature should be around 200–205°F (93–96°C) for a fully baked quick bread.
- Let the loaf cool in the pan for 10–15 minutes. Run a knife around the edges, then lift the loaf onto a wire rack to cool completely before slicing. If you cut too soon it may crumble.
Best ways to enjoy it
- Serve slightly warm with a smear of butter or mascarpone for brunch.
- Toast slices gently and top with ricotta and honey for a sweet-salty contrast.
- Pair with coffee, a glass of milk, or a fruit salad for a balanced spread.
- For a party, thinly slice and arrange with fresh berries and whipped cream.
Storage and reheating tips
- Room temperature: Wrap the cooled loaf tightly in plastic wrap or store in an airtight container. Keeps 2 days at room temp.
- Refrigerator: Store in an airtight container for up to 5 days. Cold slices are firmer; bring to room temp or warm briefly before serving.
- Freezing: Wrap the cooled loaf tightly in plastic and then foil, or slice and freeze between sheets of parchment in a freezer bag. Freeze up to 3 months. Thaw overnight in the fridge or on the counter for a few hours.
- Reheating: Microwave a slice for 12–20 seconds to warm, or toast gently. If reheating from frozen, thaw first or microwave in short bursts.
Food safety note: Because this is a quick bread containing eggs, keep leftovers refrigerated if you won’t eat them within 48 hours.
Helpful cooking tips
- Don’t over-squeeze the zucchini — remove just the excess water. Too dry makes the loaf dense; too wet makes it gummy.
- Use room-temperature eggs to help the batter emulsify for a tender crumb.
- Measure flour correctly: spoon into the measuring cup and level off. Packing flour can produce a dry loaf.
- If your loaf browns too quickly, tent loosely with foil after 25–30 minutes of baking.
- Toast nuts before chopping to intensify their flavor.
- For even baking, avoid overfilling the pan. Use a 9×5-inch loaf pan for the best results.
Creative variations
- Mint-chocolate: add 1/2 teaspoon peppermint extract and use dark chocolate chips.
- Nutella swirl: drop tablespoons of Nutella into the batter in the pan and swirl with a knife before baking.
- Mocha: add 1 tablespoon instant espresso powder to the dry ingredients.
- Orange-chocolate: add 1 teaspoon orange zest and swap semisweet chips for dark or orange-flavored chips.
- Vegan: replace eggs with flax eggs, use non-dairy milk if needed, and choose vegan chocolate chips.
- Muffins: divide batter into a 12-cup muffin tin and bake 18–22 minutes.
Common questions
Q: Can I use frozen zucchini?
A: Yes. Thaw and drain frozen shredded zucchini thoroughly — press it in a towel to remove as much water as possible before measuring and adding to the batter.
Q: My loaf sank in the middle. What happened?
A: Common causes: underbaked loaf, overmixing (too much gluten), too much moisture, or oven temperature too low. Check doneness with a toothpick and use accurate oven temps (oven thermometer recommended).
Q: Can I cut down on sugar?
A: You can reduce granulated sugar by up to 25% with minor texture changes; the loaf will be less sweet and slightly denser. Using dark chocolate chips or bittersweet chips will also reduce perceived sweetness.
Q: Is this suitable for kids/school lunches?
A: Generally yes — it’s baked through and contains hidden veggies. Check school policies for nut-free requirements if you include nuts.
Q: Can I make this into two smaller loaves or free-form cakes?
A: Yes. Split into two 8×4 pans and reduce bake time slightly; check at 35–45 minutes. Smaller pans mean shorter baking time.
Q: How do I know the loaf is done besides a toothpick?
A: The edges will pull slightly from the pan, the top will spring back when lightly pressed, and the internal temp should be roughly 200–205°F.
Enjoy the balance of deep chocolate and tender zucchini. If you try a variation (mint, Nutella, or muffins), tell me which one you liked best — I’m happy to help tweak it for your preferences.
Print
Double Chocolate Zucchini Bread
- Total Time: 75 minutes
- Yield: 1 loaf (approximately 8 servings)
- Diet: Vegetarian
Description
A moist and intensely chocolatey bread that cleverly incorporates zucchini, perfect for breakfast or as a snack.
Ingredients
- 1 cup shredded zucchini (about 1 medium zucchini; squeeze lightly to remove excess water)
- 1 cup all-purpose flour
- 1/2 cup Dutch-process cocoa powder
- 1 cup granulated sugar
- 1/2 cup packed brown sugar
- 1/2 cup vegetable oil
- 2 large eggs, room temperature
- 1 teaspoon vanilla extract
- 1 teaspoon baking soda
- 1/2 teaspoon baking powder
- 1/4 teaspoon salt
- 1 cup semisweet chocolate chips
- Optional: 1/2 cup chopped nuts (walnuts or pecans), 1/2 teaspoon cinnamon or espresso powder
Instructions
- Preheat your oven to 350°F (175°C). Grease a 9×5-inch loaf pan and line it with parchment for easier removal.
- Shred the zucchini and place it in a clean kitchen towel. Squeeze out a few tablespoons of moisture; you want it damp, not dripping.
- Whisk together the granulated sugar, brown sugar, oil, eggs, and vanilla until smooth.
- Add the shredded zucchini to the wet mixture and stir to combine.
- In another bowl, sift together the flour, cocoa powder, baking soda, baking powder, and salt.
- Gradually add the dry ingredients to the wet ingredients. Stir with a spatula until just combined.
- Fold in the chocolate chips and any optional nuts or spices.
- Pour the batter into the prepared loaf pan and smooth the top. Sprinkle extra chocolate chips on top if desired.
- Bake for 50–60 minutes, rotating the pan halfway through. Start checking at 45 minutes.
- Let the loaf cool in the pan for 10–15 minutes before transferring to a wire rack to cool completely.
Notes
Using Dutch-process cocoa gives a mellower chocolate note. Shred zucchini on the large holes of a box grater for best results.
- Prep Time: 15 minutes
- Cook Time: 60 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American