Chocolate Zucchini Bread With Sour Cream tastes like a fudgy loaf-cake with deep cocoa flavor, melty chocolate chips, and a super tender crumb. It suits anyone who craves a quick chocolate bake with a veggie boost and it takes about 70 minutes start to finish. I first baked it for a neighbor drop-off and we both stole an extra slice before it cooled.
Why This Chocolate Zucchini Bread With Sour Cream
Chocolate Zucchini Bread With Sour Cream uses simple staples and one bowl, so you can get it in the oven fast. Sour cream keeps the crumb soft, while zucchini adds moisture without a green taste. The batter mixes by hand with a whisk and spatula.
You grate the zucchini right on a box grater and skip any special equipment. Cocoa, sugars, and oil deliver a rich, tender loaf. You line the pan with parchment for a neat lift and easy cleanup.
Ingredients You Need
- All-purpose flour: 1 1/2 cups or 190 g. Use a spoon-and-level method or weigh for accuracy. A 1:1 gluten-free baking blend works well too.
- Unsweetened cocoa powder: 1/2 cup or 45 g. Dutch-process gives a rounder chocolate flavor; natural cocoa works too.
- Baking soda: 1 teaspoon.
- Baking powder: 1/2 teaspoon.
- Fine sea salt: 1/2 teaspoon.
- Instant espresso powder: 1 teaspoon, optional, for deeper chocolate notes. King Arthur or Medaglia d’Oro both taste great.
- Large eggs: 2, at room temp for better mixing.
- Granulated sugar: 3/4 cup or 150 g.
- Light brown sugar: 1/2 cup or 100 g, packed.
- Sour cream: 1/2 cup or 120 g, full-fat for best texture. Thick Greek yogurt works in a pinch.
- Neutral oil: 1/2 cup or 120 ml. Use canola, grapeseed, or light olive oil. Melted butter works, though the loaf firms up more once cool.
- Vanilla extract: 2 teaspoons.
- Zucchini: 1 1/2 cups or about 180 g, finely grated and lightly packed. No need to wring it dry; blot if it seems very wet.
- Chocolate chips: 1 cup. I like Ghirardelli or Guittard; mini chips distribute evenly.
- Optional topper: 1 tablespoon coarse sugar for sparkle.
Equipment:
- 9×5-inch metal loaf pan
- Parchment paper and nonstick spray
- Box grater
- Medium and large mixing bowls, whisk, and spatula
- Measuring cups or, better, a kitchen scale
- Cooling rack and toothpick
How to Make Chocolate Zucchini Bread With Sour Cream
- Prep Time: 15 minutes
- Cook Time: 55 minutes
- Total Time: 70 minutes
- Heat the oven to 350°F. Spray a 9×5-inch loaf pan and line it with a parchment sling.
- Grate the zucchini on the fine holes of a box grater. Lightly blot the pile with a clean towel if it looks watery.
- Whisk flour, cocoa, baking soda, baking powder, salt, and espresso powder in a medium bowl.
- In a large bowl, whisk eggs, granulated sugar, and brown sugar until glossy. Whisk in sour cream, oil, and vanilla until smooth.
- Add the dry mix to the wet mix. Stir with a spatula until a few flour streaks remain.
- Fold in zucchini and chocolate chips until the batter looks uniform. Scrape the batter into the lined pan and smooth the top. Sprinkle coarse sugar if you want a crisp lid.
- Bake 50 to 60 minutes, until a toothpick at the center shows a few moist crumbs but no wet batter. If the top browns early, tent the pan with foil.
- Cool the loaf in the pan for 15 minutes. Lift it out with the parchment and finish cooling on a rack before slicing.
Tips & Common Mistakes
- Measure flour with a scale or spoon-and-level to avoid a dry loaf.
- Use room temp eggs and sour cream so the batter mixes evenly.
- Do not overmix after you add the flour. Stop when the batter looks just combined.
- Shred zucchini fine for even moisture and a tender crumb.
- Skip squeezing the zucchini bone-dry. Light blotting keeps balance without a gummy texture.
- Check doneness at 50 minutes. Aim for a few moist crumbs on the tester or about 200°F internal temp.
- Use a metal pan for even baking. Glass can lengthen baking time.
- Line the pan with a parchment sling to prevent sticking and to lift cleanly.
- Fold in chocolate chips at the end so they don’t sink.
- Let the loaf cool before slicing to keep the crumb from tearing.
Variations I’ve Tried
- Double chocolate chunk: Swap half the chips for chopped dark chocolate and add 2 tablespoons cocoa nibs.
- Walnut crunch: Fold in 3/4 cup toasted chopped walnuts and a pinch of flaky salt on top.
- Mocha glaze: Whisk 3/4 cup powdered sugar with 1 tablespoon cocoa and 2 to 3 teaspoons strong coffee; drizzle over the cool loaf.
- Orange zest twist: Add 1 tablespoon fresh orange zest and 1/2 teaspoon cardamom to the batter.
- Gluten-free: Use a 1:1 gluten-free flour blend and add 1 extra tablespoon sour cream for moisture.
- Muffins or minis: Portion into a 12-cup muffin tin and bake 18 to 22 minutes, or fill mini loaf pans and bake 28 to 35 minutes.
How to Serve Chocolate Zucchini Bread With Sour Cream
Serve warm slices with a pat of salted butter or a swipe of cream cheese. Pair it with hot coffee, a cold glass of milk, or a latte if you want cafe vibes. Add fresh raspberries or strawberries for a bright pop. For dessert, toast a slice and top it with vanilla ice cream and a few extra chips.
Make-Ahead and Storage
Wrap the fully cooled loaf in parchment and then foil, or store slices in airtight containers. Keep at room temp for 2 to 3 days in a cool spot. Refrigerate for up to 1 week; bring slices to room temp for the best texture.
Freeze the whole loaf or individual slices for up to 3 months. Wrap tightly and stash in a freezer bag. Thaw on the counter, then refresh slices in a 300°F oven for 8 to 10 minutes or in the microwave for 10 to 15 seconds.
Nutrition Information
Approximate per slice for 12 slices: 320 calories, 15 g fat, 44 g carbs, 3 g fiber, 27 g sugars, 5 g protein, 270 mg sodium. Values will vary by brand and exact chocolate. Zucchini adds a bit of fiber and moisture without extra oil. Enjoy a slice as a snack or dessert and share the rest if you need portion control backup.