This rich and moist chocolate zucchini bread is an excellent way to utilize extra summer squash. It provides a fudgy texture that is completely gluten-free and dairy-free.

List of ingredients
- 1 1/2 cups packed grated zucchini (do not peel) – adds essential moisture and nutrients.
- 3 large eggs – provides structure and binding for the gluten-free batter.
- 1/2 cup avocado oil (or another neutral/melted oil) – ensures a tender crumb.
- 3/4 cup coconut sugar (or brown sugar) – adds a deep, caramelized sweetness.
- 1/2 cup dark cocoa powder (alkalized or Dutch-processed) – creates an intense chocolate flavor.
- 1 1/2 teaspoon vanilla extract – enhances the overall flavor profile.
- 1 cup gluten-free measure-for-measure or 1:1 gluten-free flour (120 grams) – creates the base structure.
- 1 teaspoon baking soda – acts as the primary leavening agent.
- 1/2 teaspoon salt – balances the sweetness of the chocolate and sugar.
- 1/2 cup chocolate chips (reserve 2-3 Tbsp for the top) – adds pockets of melted chocolate.
step-by-step instructions
- Preheat and Prepare: Set your oven to 350 degrees F. Grease a 9″x5″ loaf pan and line the bottom and sides with parchment paper for easy removal.
- Mix Dry Components: In a medium-sized bowl, combine the gluten-free flour, baking soda, and salt. Whisk these together thoroughly to remove any lumps.
- Combine Wet Components: In a separate large bowl, whisk together the eggs, oil, coconut sugar, cocoa powder, and vanilla extract until the mixture is smooth.
- Integrate Flour: Gradually add the dry flour mixture into the wet ingredients. Stir until the batter is almost fully combined, leaving just a few small white patches of flour.
- Fold in Mix-ins: Gently fold the grated zucchini and the majority of the chocolate chips into the batter. Continue stirring until the zucchini is evenly distributed.
- Bake the Loaf: Pour the batter into the prepared loaf pan and sprinkle the reserved chocolate chips on top. Bake at 350 degrees F for 50-60 minutes, or until a toothpick inserted in the center comes out clean with only a few moist crumbs.
- Cool the Bread: Leave the pan on a wire cooling rack for 15 minutes. Run a knife around the edges, then lift the bread out using the parchment paper handles to cool completely on the rack.
- Store Properly: Place leftover slices in an airtight container at room temperature for 2-3 days, or seal in a freezer bag for up to 2 months.
Baking Tips for Optimal Results
Selecting the Right Gluten-Free Flour Blend
Use a 1:1 or measure-for-measure flour blend that already includes xanthan gum. This additive is crucial for mimicking the elasticity of gluten, preventing the bread from becoming too crumbly. If your blend lacks it, the loaf may not hold its shape.
Preparing Zucchini for Maximum Moisture
Grate the zucchini using a box grater or a food processor with a shredding disk. Do not peel the skin, as it provides color and nutrients. There is no need to squeeze the liquid out of the zucchini, as the batter relies on that moisture for fudginess.
The Importance of Dutch-Processed Cocoa
Dutch-processed or alkalized cocoa powder is recommended for its darker color and smoother, less acidic taste. This creates a more professional, chocolate-cake-like profile. Standard cocoa powder can be used, but the result will be lighter in color and slightly more tart.
Ensuring Proper Batter Aeration
Whisk the wet ingredients vigorously before adding the dry components to incorporate air. When folding in the zucchini, use a gentle motion to avoid overworking the gluten-free flour. Overmixing can lead to a gummy texture in some GF blends.
Ingredient Substitutions and Alternatives
Switching to Brown Sugar for Different Flavor Profiles
While coconut sugar offers a caramel-like depth, light or dark brown sugar is an excellent alternative. Brown sugar contains molasses, which adds a different kind of richness and helps maintain moisture. The measurements remain the same for either choice.
Using Coconut Oil as a Dairy-Free Alternative
If you do not have avocado oil, melted coconut oil is a suitable replacement. Ensure the coconut oil is melted but cooled slightly before adding it to the eggs to prevent them from cooking. Canola or vegetable oils also work well as neutral bases.
Creating Egg Substitutes for Vegan Versions
To make this recipe vegan, replace the eggs with flax eggs or a commercial egg replacer. For flax eggs, mix 1 tablespoon of ground flaxseed meal with 3 tablespoons of water and let it sit for 5 minutes per egg. Note that this may slightly alter the rise and texture.
Choosing the Best Dairy-Free Chocolate Chips
Select high-quality dairy-free chocolate chips made with cocoa butter or coconut oil. Dark chocolate chips typically have a lower dairy content and provide a more intense flavor contrast to the sweet bread. Check labels to ensure they are entirely plant-based if required.
Storage and Preservation Guidelines
Preventing Moisture Loss During Room Temperature Storage
Store the cooled bread in a tightly sealed airtight container to prevent it from drying out. Keep the container in a cool, dry place away from direct sunlight. This will maintain the moist crumb for approximately 2 to 3 days.
Guidelines for Refrigerating Gluten-Free Bread
Refrigeration can extend the shelf life to about a week, though it may firm up the texture. Store the loaf in a sealed container or wrap individual slices in parchment paper and foil. This prevents the bread from absorbing odors from other foods in the fridge.
Freezing Techniques for Long-Term Freshness
For long-term storage, slice the bread first and place parchment paper between each slice. Seal the slices in a heavy-duty freezer bag, removing as much air as possible to prevent freezer burn. This method allows you to thaw only what you need.
Proper Thawing Methods for Frozen Slices
Thaw frozen slices in the refrigerator overnight or leave them on the counter for an hour at room temperature. For a quicker result, you can microwave a slice for 10-15 seconds. Thawing slowly helps maintain the original texture of the bread.
Reheating and Serving Suggestions
Warming Slices in the Oven for a Fresh-Baked Taste
Preheat your oven to 300 degrees F and place slices on a baking sheet. Warm them for 5-8 minutes until the chocolate chips are soft again. This method provides a crisp exterior and a warm, gooey center.
Quick Microwave Reheating Tips
Place a slice on a microwave-safe plate and heat on medium power for 15-20 seconds. Be careful not to overheat, as gluten-free breads can become tough or rubbery if microwaved for too long. Check the center for warmth every 10 seconds.
Adding a Dark Chocolate Ganache Topping
For a more decadent dessert, pour a warm dairy-free chocolate ganache over the cooled loaf. Mix equal parts melted dairy-free chocolate and coconut cream until smooth. This adds a professional finish and extra richness to each slice.
Complementing the Bread with Cold Brew Coffee
The deep cocoa notes of this bread pair exceptionally well with the acidity of cold brew coffee. The bitterness of the coffee balances the sweetness of the coconut sugar. Serve a warm slice alongside a chilled glass for a balanced treat.
Troubleshooting Common Issues
Identifying an Underbaked Center
If a toothpick comes out with wet batter rather than moist crumbs, the bread needs more time. Continue baking in 5-minute increments. If the top is browning too quickly, loosely cover the pan with aluminum foil to protect the surface.
Fixing a Dense or Heavy Texture
A dense loaf often results from expired baking soda or overmixing the batter. Ensure your leavening agents are fresh and that you stop stirring as soon as the flour patches disappear. Using a proper 1:1 GF blend is also essential for the correct lift.
Preventing the Loaf from Sticking to the Pan
Always use a combination of grease and parchment paper for the most reliable release. If the bread sticks, let it cool completely before attempting to remove it. The structure of gluten-free bread firms up as it cools, making it easier to lift.
Adjusting for Different Loaf Pan Sizes
If using a pan smaller than 9″x5″, the batter may overflow or take longer to bake through. If using a larger pan, the bread will be thinner and require a shorter baking time. Check for doneness starting 10 minutes before the suggested end time for larger pans.
Frequently Asked Questions
Do I need to peel the zucchini?
No, you do not need to peel the zucchini. The skin is thin and blends into the dark chocolate batter, providing extra nutrients and fiber without affecting the taste.
Can I use standard unsweetened cocoa powder?
Yes, you can use regular cocoa powder, but the flavor will be slightly more acidic and the color will be lighter. For the richest, darkest result, Dutch-processed cocoa is the best choice.
How do I know when the bread is fully baked?
The best indicator is the toothpick test. Insert a toothpick into the center of the loaf; it should come out clean or with a few moist crumbs, but absolutely no wet, liquid batter.
Which specific gluten-free flour brands work best?
King Arthur Measure-for-Measure and Bob’s Red Mill 1:1 are highly recommended for this recipe. Ensure the blend contains xanthan gum to guarantee the bread has the proper structure and does not crumble.
Print
Gluten-Free Chocolate Zucchini Bread
- Total Time: 80 minutes
- Yield: 1 loaf (about 12 slices) 1x
- Diet: Gluten-Free, Dairy-Free
Description
This ultra-chocolatey Gluten-Free Chocolate Zucchini Bread is the perfect way to use up extra zucchini in the summer!
Ingredients
- 1 1/2 cups packed grated zucchini
- 3 large eggs
- 1/2 cup avocado oil
- 3/4 cup coconut sugar
- 1/2 cup dark cocoa powder
- 1 1/2 teaspoon vanilla extract
- 1 cup gluten-free measure-for-measure flour
- 1 teaspoon baking soda
- 1/2 teaspoon salt
- 1/2 cup chocolate chips
Instructions
- Preheat & Prep: Preheat oven temperature to 350 degrees F. Grease a loaf pan (9″x5″) and line with parchment paper.
- Combine Dry Ingredients: In a medium bowl, combine flour, baking soda, and salt. Whisk to combine well.
- Combine Wet Ingredients: In a large bowl, combine eggs, oil, coconut sugar, cocoa powder, and vanilla. Stir or whisk to combine well.
- Mix: Add Dry Ingredients to the Wet Ingredients and stir until almost fully combined, with just a few white floury patches left.
- Fold In Zucchini & Chocolate Chips: Add grated zucchini and chocolate chips to the batter and fold in until evenly blended.
- Bake Zucchini Bread: Pour batter into prepared loaf pan and sprinkle with remaining chocolate chips. Bake at 350 degrees F. for 50-60 minutes, or until a toothpick inserted in the center comes out clean with only a few moist crumbs.
- Cool: Place pan on a cooling rack for about 15 minutes, then run a knife around the edges of the bread and transfer the bread out of the pan and onto a wire rack to finish cooling.
- Store: Store leftover chocolate zucchini bread in an airtight container at room temperature 2-3 days, or freeze up to 2 months in a freezer bag.
Notes
Use a gluten-free flour blend that contains xanthan gum. Do not substitute almond flour or coconut flour as they will not work in this recipe.
- Prep Time: 20 minutes
- Cook Time: 60 minutes
- Category: Cake, Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 slice
- Calories: 282 kcal
- Sugar: 17.3 g
- Sodium: 234 mg
- Fat: 17.1 g
- Saturated Fat: 4.1 g
- Unsaturated Fat: 13 g
- Trans Fat: 0 g
- Carbohydrates: 30.1 g
- Fiber: 2.2 g
- Protein: 3.5 g
- Cholesterol: 46.5 mg