This recipe creates a tender, moist zucchini bread loaded with rich dark chocolate chips and a slightly crisp exterior. It is a simple process that turns fresh garden zucchini into a decadent dessert loaf.

List of ingredients

1 1/2 cups (270g) finely grated zucchini (about 1 1/2 medium zucchini) – squeeze out excess moisture before adding.
2 cups (264g) all purpose flour – spooned and leveled for accuracy.
1 tsp baking soda – ensures a proper rise.
1/2 tsp baking powder – adds to the light texture.
1/2 tsp kosher salt – balances the sweetness.
1/2 cup unsalted butter – melted and cooled to prevent curdling.
1/2 cup (100g) granulated sugar – provides sweetness.
1/2 cup (100g) light brown sugar, packed – adds moisture and a caramel note.
1/3 cup (82g) sour cream – creates a rich, tender crumb.
2 large eggs – binds the ingredients together.
2 tsp vanilla extract – enhances the overall flavor.
1 1/2 cups dark chocolate chips – plus extra for sprinkling on top.
Flaky sea salt – optional for sprinkling on top after baking.

step-by-step instructions

Prepare Oven and Pan: Preheat your oven to 350F. Grease a true 9×5 inch loaf pan and line it with parchment paper for easy removal.
Process the Zucchini: Grate the zucchini using the fine holes of a box grater. Measure out 1 1/2 cups, then squeeze out as much water as possible by wringing handfuls into the sink.
Whisk Dry Ingredients: In a medium mixing bowl, combine the flour, baking soda, baking powder, and salt. Whisk until evenly distributed and set aside.
Combine Wet Ingredients: In a large bowl, whisk together the melted, cooled butter and both sugars. Mix in the sour cream, eggs, vanilla, and the prepared squeezed zucchini.
Integrate Flour: Pour the dry ingredients into the wet mixture. Use a rubber spatula to gently fold the batter together, taking care not to overmix.
Fold in Chocolate: When only a small amount of flour is still visible, add the dark chocolate chips. Continue to mix gently until the chips are evenly distributed.
Bake the Loaf: Transfer the batter into the prepared pan and spread it evenly. Sprinkle additional chocolate chips on top and bake for 1 hour to 1 hour 10 minutes.
Test for Doneness: Insert a toothpick into the center; it should come out clean or with a few moist crumbs. Place the pan on a cooling rack for 30-40 minutes.
Final Touch: Sprinkle the top with flaky sea salt if desired, then slice and serve.

Essential Equipment and Pan Selection

Use a True 9×5 Loaf Pan

Many home bakers use 1-pound loaf pans, which are typically around 4.25 by 8.25 inches. Because this recipe has a high moisture content, a smaller pan can prevent the center from baking through completely. A true 9×5 pan provides the necessary surface area and volume for even heat distribution.

Select Light-Colored Aluminum Pans

The material of your pan affects how the bread browns and cooks. Light-colored aluminum is preferred because it conducts heat evenly without scorching the edges. Darker non-stick pans can sometimes cause the exterior to overcook before the center is set.

Line with Parchment Paper

Even with greasing, zucchini bread can be sticky. Lining the bottom and sides of the pan with a parchment paper sling allows you to lift the entire loaf out of the pan effortlessly. This prevents the bread from breaking when you try to remove it for cooling.

Zucchini Preparation and Moisture Control

Utilize the Small Grater Holes

Using the smaller holes on a box grater ensures the zucchini is finely shredded. This creates a seamless, smooth texture where the vegetable blends into the crumb. Coarse shreds can leave large chunks that may disrupt the consistency of the loaf.

Squeeze Out Excess Water

Zucchini holds a significant amount of water that can make the bread mushy if left inside. After measuring the grated zucchini, squeeze it firmly with your hands to remove about 80% of the liquid. This ensures the bread remains moist but structurally sound.

Measure After Grating

Always grate your zucchini first before measuring it into the measuring cup. This ensures you have the correct volume of vegetable material relative to the flour and fats. Measuring whole zucchini can lead to inconsistent amounts of grated produce.

Flour Handling and Mixing Techniques

Spoon and Level the Flour

Scooping flour directly with a measuring cup packs the flour down, which can lead to adding too much. Instead, gently spoon the flour into the cup and level it off with a flat edge. This prevents the bread from becoming tough or dry.

Use a Digital Kitchen Scale

For the highest level of precision, weigh your flour and sugars using a digital scale. Weight is more consistent than volume, especially with flour which varies in density. This eliminates the risk of adding excess flour that could lead to a dense loaf.

Avoid Overmixing the Batter

Overmixing develops too much gluten, which results in a tough texture and a sunken center. Switch to a rubber spatula once the flour is added and mix only until the streaks disappear. This keeps the crumb soft and tender.

Fold Gently with a Spatula

Using a whisk for the final stages can incorporate too much air and overwork the batter. A rubber spatula allows you to fold the chocolate chips and flour in with a gentle motion. This preserves the aeration provided by the baking soda and powder.

Ingredient Substitutions and Variations

Replace Sour Cream with Greek Yogurt

If you do not have sour cream, plain Greek yogurt is an excellent substitute. It provides the same acidity and thickness, which helps tenderize the gluten in the flour. Use a 1:1 ratio for a similar result in moisture and tang.

Swap Dark Chocolate for Semi-Sweet

Dark chocolate offers a sophisticated bitterness that balances the sugar, but semi-sweet chips are a great alternative. Milk chocolate can also be used, although it will make the bread significantly sweeter. Adjust the sugar slightly if using very sweet chocolate.

Substitute Butter with Coconut Oil

For a dairy-free fat option, melted coconut oil can replace the unsalted butter. Ensure the oil is melted and cooled before mixing to maintain the emulsion. This results in a slightly different flavor profile but similar moistness.

Add Warm Spices for Depth

Adding a teaspoon of ground cinnamon or a pinch of nutmeg can enhance the flavor of the zucchini. These spices complement the brown sugar and dark chocolate perfectly. Mix the spices into the dry ingredients before folding them into the wet mixture.

Incorporate Chopped Nuts

Adding 1/2 cup of chopped walnuts or pecans provides a satisfying textural contrast. The crunch of the nuts balances the softness of the zucchini and the melt of the chocolate. Fold them in at the same time as the chocolate chips.

Storage and Freshness Guidelines

Store at Room Temperature

Keep the bread in an airtight container at room temperature for up to two days. Ensure the bread is completely cool before sealing it to prevent condensation. Condensation can lead to a soggy crust and faster spoilage.

Refrigerate for Extended Freshness

For longer storage, keep the bread in the refrigerator in a sealed container for up to one week. The cold temperature helps preserve the moisture and prevents the oils from oxidizing. Slicing the bread before storing makes it easier to retrieve individual pieces.

Freeze for Long-Term Storage

Wrap individual slices or the whole loaf tightly in plastic wrap and then place them in a freezer bag. This prevents freezer burn and keeps the bread fresh for up to three months. Thaw slices in the refrigerator overnight or at room temperature.

Reheating and Serving Suggestions

Quick Microwave Reheating

To enjoy a warm slice, heat a piece in the microwave for about 10 seconds. This softens the crumb and melts the chocolate chips again. Be careful not to overheat, as the bread can become rubbery if cooked too long.

Oven Reheating for Crispness

For a crispier exterior, wrap a slice in foil and place it in a 300F oven for 5-10 minutes. This gently warms the center while reviving the crust. This method is ideal for slices that have been refrigerated.

Serving with Butter

Serving the bread slightly warm with a pat of salted butter enhances the richness. The butter melts into the warm crumb and complements the dark chocolate. This is an excellent option for a breakfast treat or an afternoon snack.

Troubleshooting Common Baking Issues

Addressing Underbaked Centers

If the center remains gummy while the edges are brown, your pan may be too small. Ensure you are using a true 9×5 pan to allow heat to reach the middle. You can also tent the top with foil to prevent over-browning while the center finishes.

Fixing a Sunken Center

A sunken center is often caused by overmixing the batter or using expired leavening agents. Check the date on your baking soda and powder to ensure they are active. Mix the batter gently to avoid collapsing the air bubbles.

Preventing a Dry Loaf

Dryness usually results from too much flour or overbaking. Carefully level your flour and use a toothpick to check for doneness every few minutes toward the end. Remove the bread as soon as the toothpick comes out clean.

Frequently Asked Questions

Can I use frozen zucchini?

Yes, but you must thaw the zucchini completely first. Once thawed, it will be very watery, so you must be extra diligent about squeezing out the excess moisture before adding it to the batter.

Why is my zucchini bread too wet?

This is usually caused by not squeezing enough water out of the grated zucchini. Ensure you wring out the zucchini until no more liquid drips easily. Excess moisture prevents the starches from setting, leading to a mushy texture.

Can I make this recipe gluten-free?

You can replace the all-purpose flour with a high-quality 1:1 gluten-free flour blend that includes xanthan gum. Note that the texture may be slightly denser, and the bake time might vary by a few minutes.

How do I know when the bread is fully baked?

The most reliable method is the toothpick test. Insert a wooden toothpick into the deepest part of the loaf; if it comes out clean or with a few moist crumbs (no raw batter), the bread is done.

Moist Dark Chocolate Chip Zucchini Bread

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Author: alyssabennett
Total Time: 1 hour 20 minutes
Yield: 1 loaf 1x
Diet: General

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Description

This is the BEST chocolate chip zucchini bread! It’s super moist with a crispy crust and is loaded with melty dark chocolate chips. This easy recipe makes the softest and most delicious zucchini bread!

Ingredients

Scale

1 1/2 cups (270g) finely grated zucchini
2 cups (264g) all purpose flour
1 tsp baking soda
1/2 tsp baking powder
1/2 tsp kosher salt
1/2 cup unsalted butter, melted and cooled
1/2 cup (100g) granulated sugar
1/2 cup (100g) light brown sugar, packed
1/3 cup (82g) sour cream
2 large eggs
2 tsp vanilla extract
1 1/2 cups dark chocolate chips
Flaky sea salt (optional)

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Instructions

Preheat: Preheat the oven to 350F and grease and line a 9×5 loaf pan with parchment paper.
Prep Zucchini: Grate the zucchini, measure it out to 1 1/2 cups, and squeeze out the water.
Dry Ingredients: In a medium bowl, whisk together the flour, baking soda, baking powder, and salt.
Wet Ingredients: In a large mixing bowl, whisk together the butter and sugars, then mix in the sour cream, eggs, vanilla, and squeezed zucchini.
Combine: Pour in the dry ingredients and use a rubber spatula to gently mix the batter.
Fold: Add in the chocolate chips and continue to gently mix to combine.
Bake: Pour the batter into the pan, top with more chocolate, and bake for 1 hour to 1 hour 10 minutes.
Cool: Place the pan on a cooling rack and allow the bread to cool for about 30-40 minutes.
Finish: Top with flaky sea salt, slice, and enjoy!

Notes

Use a true 9×5 loaf pan to ensure the center bakes through. Squeeze at least 80% of the water out of the zucchini to avoid a mushy texture. Do not overmix the batter to prevent the bread from becoming tough.

Prep Time: 20 minutes
Cook Time: 1 hour
Category: Dessert
Method: Baking
Cuisine: American

Nutrition

Serving Size: 1 slice
Calories: 410 kcal
Sugar: 28 g
Sodium: 380 mg
Fat: 18 g
Saturated Fat: 10 g
Unsaturated Fat: 8 g
Trans Fat: 0 g
Carbohydrates: 48 g
Fiber: 3 g
Protein: 6 g
Cholesterol: 75 mg