Double Chocolate Zucchini Bread
This double chocolate zucchini bread is rich, moist, and full of chocolate flavor. Shredded zucchini melts right into the batter and keeps every slice soft for days, while cocoa powder and chocolate chips bring the double chocolate. You cannot taste the zucchini at all — it just makes the bread incredibly moist. If you have extra zucchini from the garden, this double chocolate zucchini bread is the most delicious way to use it up.
Why You’ll Love It
- Incredibly moist. Zucchini keeps the bread soft and tender for days without extra fat.
- Double the chocolate. Cocoa powder in the batter plus chocolate chips in every slice.
- You cannot taste the zucchini. It melts into the bread and only adds moisture, not flavor.
- Easy one-bowl recipe. No mixer needed — just stir everything together and bake.
- Great for sharing. One loaf makes 10 generous slices, perfect for neighbors and friends.
Why Double Chocolate Zucchini Bread Works So Well
Zucchini is the secret ingredient that makes this bread so moist. Zucchini is mostly water, and as the bread bakes, that water turns to steam and keeps the crumb soft and tender. The shredded zucchini itself melts away completely — you will not see it or taste it in the finished loaf. It is a clever trick that adds moisture without adding fat, and it works in almost any quick bread.
The double chocolate comes from two sources working together. Unsweetened cocoa powder gives the whole loaf a deep, dark chocolate color and rich flavor. Chocolate chips add little pockets of melted chocolate that stay gooey even after the bread cools. Using both means every single bite tastes intensely chocolatey, not just the bites with chips.
This is a quick bread, which means it uses baking soda and baking powder instead of yeast. There is no waiting for dough to rise — you mix the batter, pour it in the pan, and bake. The leaveners react with the moisture in the batter and lift the bread as it bakes. The result is a tall, tender loaf with a soft crumb, ready in about an hour with almost no effort.
Key Ingredients Explained
- Zucchini: Two medium zucchini (about 2 cups shredded). Shred them on the large holes of a box grater. Do not peel them — the skin disappears into the bread. Squeeze out extra liquid with a clean towel if the zucchini is very watery.
- All-purpose flour: Two cups of plain flour give the bread its structure. Measure carefully — too much flour makes the loaf dry and heavy.
- Cocoa powder: Half a cup of unsweetened cocoa powder for deep chocolate flavor. Natural cocoa works best here because it reacts with the baking soda.
- Sugar: One cup of granulated sugar plus 1/4 cup of brown sugar. The mix gives sweetness with a hint of caramel depth from the brown sugar.
- Eggs: Two large eggs at room temperature. They hold the batter together and help the bread rise evenly.
- Oil: Half a cup of vegetable oil keeps the bread moist. Oil makes a softer crumb than butter in quick breads.
- Baking soda and baking powder: One teaspoon of baking soda plus half a teaspoon of baking powder. Together they give the loaf a tall, even rise.
- Chocolate chips: Three-quarter cup of semi-sweet chocolate chips, plus extra for the top. They melt into gooey pockets throughout the bread.
- Vanilla extract: Two teaspoons of pure vanilla round out the chocolate flavor and add warmth.
- Salt: Half a teaspoon of salt balances the sweetness and makes the chocolate taste richer.
Ingredients
- 2 medium zucchini (about 2 cups shredded)
- 2 cups all-purpose flour
- 1/2 cup unsweetened cocoa powder
- 1 cup granulated sugar
- 1/4 cup brown sugar, packed
- 2 large eggs, at room temperature
- 1/2 cup vegetable oil
- 1 teaspoon baking soda
- 1/2 teaspoon baking powder
- 1/2 teaspoon salt
- 2 teaspoons pure vanilla extract
- 3/4 cup semi-sweet chocolate chips, plus extra for topping
How to Make Double Chocolate Zucchini Bread
Step 1: Heat the oven and prepare the pan.
Preheat your oven to 350°F (175°C). Grease a 9×5-inch loaf pan with butter or cooking spray, and line the bottom with parchment paper for easy removal.
Tip: Let the parchment hang over the sides so you can lift the whole loaf out after baking.
Step 2: Shred the zucchini.
Shred the zucchini on the large holes of a box grater. If it looks very wet, squeeze it gently in a clean kitchen towel to remove extra liquid. You need about 2 cups of shredded zucchini.
Tip: Do not peel the zucchini. The thin skin melts into the bread and adds tiny green flecks that disappear in the dark batter.
Step 3: Mix the wet ingredients.
In a large bowl, whisk together the sugar, brown sugar, eggs, oil, and vanilla until smooth. Stir in the shredded zucchini.
Tip: Whisk well so the sugars start to dissolve — this gives the bread a finer crumb.
Step 4: Mix the dry ingredients.
In a separate medium bowl, whisk together the flour, cocoa powder, baking soda, baking powder, and salt. Sifting the cocoa powder first removes lumps.
Tip: Cocoa powder clumps easily. Whisking it with the flour breaks up the lumps without a sifter.
Step 5: Combine and add chocolate chips.
Pour the dry ingredients into the wet ingredients. Stir gently just until no dry flour is visible. Fold in the chocolate chips. Do not overmix.
Tip: Stop stirring as soon as the flour disappears. Overmixing makes quick breads tough and dense.
Step 6: Bake.
Pour the batter into the prepared loaf pan and smooth the top. Sprinkle extra chocolate chips on top. Bake for 50 to 60 minutes, until a toothpick inserted in the center comes out with a few moist crumbs (melted chocolate is fine, wet batter is not).
Tip: If the top browns too fast, cover the loaf loosely with foil for the last 15 minutes.
Step 7: Cool before slicing.
Let the bread cool in the pan for 15 minutes, then lift it out and cool completely on a wire rack before slicing.
Tip: Slicing too early makes the loaf crumble. A fully cooled loaf cuts into clean, neat slices.
Double Chocolate Zucchini Bread
Ingredients
Method
- Preheat oven to 350°F (175°C). Grease a 9×5-inch loaf pan and line with parchment.
- Shred the zucchini on a box grater. Squeeze out extra liquid if very watery.
- Whisk the sugars, eggs, oil, and vanilla in a large bowl. Stir in the zucchini.
- In a separate bowl, whisk the flour, cocoa powder, baking soda, baking powder, and salt.
- Stir the dry ingredients into the wet just until no flour is visible. Fold in the chocolate chips.
- Pour into the pan, top with extra chips, and bake 50 to 60 minutes until a toothpick comes out with moist crumbs.
- Cool 15 minutes in the pan, then lift out and cool completely before slicing.
Notes
Variations
- Chocolate zucchini muffins: Divide the batter among 12 lined muffin cups and bake at 350°F (175°C) for 20 to 25 minutes. Great for lunchboxes.
- Nutty chocolate zucchini bread: Fold in 1/2 cup of chopped walnuts with the chocolate chips. The nuts add crunch against the soft bread.
- Orange chocolate zucchini bread: Add 1 tablespoon of orange zest to the wet ingredients. Orange and chocolate are a classic pairing.
- Gluten-free version: Replace the flour with a 1-to-1 gluten-free baking flour blend. The bread stays moist and the texture is very close to the original.
What to Serve With
- A glass of cold milk — the perfect partner for rich chocolate bread
- Hot coffee — the slight bitterness balances the sweet chocolate
- Vanilla ice cream — a warm slice with ice cream is pure dessert bliss
- Fresh berries — raspberries or strawberries cut through the richness
- A smear of cream cheese — adds tangy contrast to the sweet chocolate
Storage & Reheating
To store: Wrap the cooled loaf tightly in plastic wrap or keep it in an airtight container at room temperature for up to 3 days. The bread stays moist because of the zucchini.
To reheat: Warm a slice in the microwave for 10 to 15 seconds to soften it and melt the chocolate chips. You can also toast slices lightly for a crisp edge.
To freeze: Wrap the whole cooled loaf (or individual slices) tightly in plastic wrap, then in foil. Freeze for up to 3 months. Thaw at room temperature or microwave slices from frozen.
Make ahead: Bake the loaf a day ahead — the flavor actually gets better overnight as the moisture settles evenly through the bread. Wrap it well once fully cool.
FAQs
Can you taste the zucchini?
No. The zucchini melts completely into the batter during baking. It adds moisture but no vegetable flavor. Even picky eaters cannot tell it is there.
Do I need to squeeze the zucchini dry?
Only if it is very watery. After shredding, if liquid pools in the bowl, squeeze the zucchini gently in a clean towel. A little moisture is good — too much makes the bread soggy.
Why did my bread sink in the middle?
The most common cause is underbaking. Make sure a toothpick comes out with moist crumbs, not wet batter. Opening the oven door too often can also cause sinking — the temperature drops each time.
Can I use frozen zucchini?
Yes. Thaw it completely and squeeze out as much liquid as possible before measuring. Frozen zucchini releases a lot of water, so squeeze it well.
Why is my bread dry?
Too much flour is the usual cause. Spoon flour into the measuring cup instead of scooping. Overbaking also dries out quick breads — start checking at 50 minutes.
Can I reduce the sugar?
You can cut the granulated sugar to 3/4 cup without hurting the texture. The bread will be less sweet but still moist and chocolatey. Do not cut more than that or the structure suffers.
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