Moist, cinnamon-spiced zucchini bread muffins made in one bowl—perfect for breakfast, snacks, or the freezer. No mixer required and ready in about 35 minutes.
Preheat oven to 350°F. Line a 12-cup muffin pan with paper liners or lightly grease.
Grate zucchini on the large holes of a box grater, then place in a clean towel and squeeze out as much liquid as possible until you have about 1.5 cup packed.
In a large bowl, whisk together flour, baking soda, baking powder, salt, cinnamon, and nutmeg.
In a separate bowl, whisk eggs, granulated sugar, brown sugar, vegetable oil, and vanilla until smooth.
Stir the grated zucchini into the wet mixture.
Add dry ingredients to wet and fold just until no dry streaks remain. If using, fold in walnuts or chocolate chips.
Divide batter evenly among muffin cups, filling each about 0.75 full.
Bake 18 to 22 minutes, or until a toothpick inserted in the center comes out clean. Cool in pan 5 minutes, then transfer to a rack to cool completely.
Notes
For the best texture, do not skip squeezing excess moisture from the zucchini. Store muffins in an airtight container at room temperature for up to 3 days or freeze up to 2 months. Add-ins like walnuts or chocolate chips are optional—use one or both, up to 0.5 cup total.