Gluten-Free Vegan Chocolate Zucchini Bread Recipe

Moist and tender, the flavor from this loaf comes from the combination of whole grain gluten-free flours, cocoa powder, and freshly grated zucchini.

By
Elizabeth Barbone
Elizabeth Barbone: Contributing Writer at Serious Eats
Elizabeth Barbone develops delicious and creative recipes for the food allergic and gluten-free communities through her site Gluten-Free Baking. Author of three cookbooks: Easy Gluten-Free Baking (2009), How to Cook Gluten-Free (2012), and The World's Easiest Paleo Baking (2016).
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Updated March 28, 2025
Closeup of gluten-free chocolate zucchini bread being sliced on a slender cutting board.

Serious Eats / Elizabeth Barbone

Last summer when my garden produced too much zucchini (there's always too much zucchini, isn't there?), I made a few batches of chocolate zucchini whoopie pies. This year, I craved that chocolate-zucchini flavor but didn't want to make dessert. So I converted the whoopie pie cake recipe into a quick bread.

At first, I simply reduced the amount of brown sugar from one cup to three-quarters of a cup. This worked and made a cake-like quick bread that wasn't too sweet.

With the sweetness reduced, the mild, almost-nutty flavor of the brown rice flour was more pronounced. I wanted more of that earthy-grainy flavor. For the next batch, sorghum flour replaced sweet rice flour and I added some ground flax meal. Now we were getting somewhere!

While still a sweet quick bread, the addition of another whole grain flour along with the ground flax meal transformed the loaf from something you'd only serve for dessert to something you could enjoy anytime of the day.

The ground flax seed, my favorite egg-replacement, inspired me to try a vegan/allergy-friendly (no gluten, no eggs, no dairy) version of the bread. The vegan loaf, made with flax meal, oil, and dairy-free milk, turned out to be my tasters favorite. The declared it "really tasty" and "rich but not heavy." And I agreed with them. This multi-grain loaf not only tasted terrific, it avoided the too-damp texture that affects many egg-free baked goods. After all those tweaks, I finally had a loaf that could be enjoyed anytime and, thanks to the allergy-friendly ingredients, by almost anyone.

August 2012

Recipe Details

Gluten-Free Vegan Chocolate Zucchini Bread Recipe

Prep 10 mins
Cook 70 mins
Active 25 mins
Cooling Time 5 mins
Total 85 mins
Serves 12 servings
Cook Mode (Keep screen awake)

Ingredients

  • 2 tablespoons ground flax seed

  • 6 tablespoons hot water

  • 1 cup (about 5 ounces) brown rice flour

  • 3/4 cup (about 5 ounces) brown sugar

  • 2/3 cup (about 2 1/2 ounces) sorghum flour

  • 1/3 cup (2 ounces) cornstarch or potato starch

  • 1/4 cup (3/4 ounces) cocoa powder, natural or Dutch-process

  • 1 teaspoon baking powder

  • 1 teaspoon baking soda

  • 1 teaspoon pumpkin pie spice or ground cinnamon

  • 1/2 teaspoon salt

  • 1/2 teaspoon xanthan gum

  • 1/2 cup vegetable oil

  • 1/2 cup  gluten-free, dairy-free milk (almond, soy, or rice milk)

  • 1 1/2 cups (about 8 ounces) grated zucchini

Directions

  1. Adjust oven rack to middle position and preheat oven to 350°F (175°C). Lightly spray a 9- by 5-inch loaf pan with non-stick cooking spray. In small bowl, whisk together ground flax seed and water. Set aside.

  2. In large bowl, whisk together brown rice flour, dark brown sugar, sorghum flour, cornstarch, cocoa powder, baking powder, baking soda, pumpkin pie spice, salt, and xanthan gum. Add ground flax seed mixture, oil, and dairy-free milk. Whisk to combine. Batter will be thick. Switch to a rubber spatula, and stir in grated zucchini. Spread batter evenly into prepared pan.

  3. Bake until loaf is set and a cake tester comes out clean, about 70 minutes. Allow loaf to cool in pan for 5 minutes before turning out onto a wire rack.

Special Equipment

9- by 5-inch loaf pan

Nutrition Facts (per serving)
338Calories
13gFat
49gCarbs
7gProtein
×
Nutrition Facts
Servings: 12
Amount per serving
Calories338
% Daily Value*
Total Fat 13g17%
Saturated Fat 2g8%
Cholesterol 0mg0%
Sodium 244mg11%
Total Carbohydrate 49g18%
Dietary Fiber 7g26%
Total Sugars 13g
Protein 7g
Vitamin C 3mg13%
Calcium 55mg4%
Iron 11mg61%
Potassium 132mg3%
*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
(Nutrition information is calculated using an ingredient database and should be considered an estimate.)

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