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Easy One-Bowl Chocolate Zucchini Muffins: Best Moist Recipe

chocolate zucchini muffins - featured image

These easy one-bowl chocolate zucchini muffins are incredibly moist, tender, and packed with rich chocolate flavor. Made with simple ingredients and no fuss, they’re perfect for breakfast, snacks, or a healthy-ish dessert.

Ingredients

Scale
  • 1 ½ cups (190g) all-purpose flour
  • ½ cup (45g) unsweetened cocoa powder
  • 1 teaspoon baking soda
  • ½ teaspoon baking powder
  • ½ teaspoon salt
  • 1 teaspoon ground cinnamon (optional)
  • ⅔ cup (135g) granulated sugar
  • ⅓ cup (75g) packed light brown sugar
  • 2 large eggs, room temperature
  • ½ cup (120ml) vegetable oil
  • 2 teaspoons vanilla extract
  • ½ cup (120ml) milk
  • 1 ½ cups (about 200g) grated zucchini (do not squeeze)
  • ½ cup (90g) semi-sweet chocolate chips

Instructions

  1. Preheat oven to 350°F (175°C). Line a 12-cup muffin tin with paper liners or grease generously.
  2. Grate zucchini using the medium holes of a box grater. Measure 1 ½ cups (including liquid). Do not squeeze.
  3. In a large mixing bowl, whisk together flour, cocoa powder, baking soda, baking powder, salt, and cinnamon.
  4. Add granulated sugar and brown sugar to the dry ingredients and whisk to combine. Make a well in the center and add eggs, oil, vanilla, and milk. Whisk gently until just combined (batter will be thick and slightly lumpy).
  5. Fold in grated zucchini (with its liquid) using a rubber spatula until evenly distributed. Do not over-mix.
  6. Fold in chocolate chips, reserving a handful for topping.
  7. Spoon batter into prepared muffin cups, filling each about ¾ full. Sprinkle reserved chocolate chips on top.
  8. Bake for 18-22 minutes, until a toothpick inserted in the center comes out with a few moist crumbs.
  9. Cool in the pan for 5 minutes, then transfer to a wire rack to cool completely.

Notes

Do not squeeze the liquid from the zucchini—it keeps the muffins moist. Over-mixing leads to tough muffins; mix just until combined. For best results, use room temperature eggs and milk. Muffins taste even better the next day.

Nutrition

Keywords: chocolate zucchini muffins, one bowl muffins, moist chocolate muffins, easy zucchini muffins, healthy muffins, kid-friendly muffins