Ingredients
Equipment
Method
Prepare the oven and zucchini
- Preheat the oven to 350°F and line a rimmed baking sheet with parchment; position the rack in the center.
- Grate the zucchini on medium holes and pack into a measuring cup until you have 1 1/2 cups; do not squeeze out the moisture.
Mix dry ingredients
- In a large bowl stir together 1 cup rolled oats, 3/4 cup all-purpose flour, 1/2 teaspoon baking soda, 1 teaspoon baking powder, 1/2 teaspoon cinnamon, 1/4 teaspoon nutmeg, and 1/2 teaspoon salt.
Mix wet ingredients and combine
- In a medium bowl whisk 1 large egg, 1/3 cup oil, 1/3 cup plain yogurt, 1/2 cup packed light brown sugar, and 1 teaspoon vanilla until combined. Add the wet mixture to the dry ingredients and fold gently until almost combined.
- Fold in the 1 1/2 cups packed grated zucchini and 1/2 cup chopped walnuts or chocolate chips if using; do not overmix.
Portion and bake
- Use a 2-tablespoon cookie scoop to drop mounds 2 inches apart onto the prepared sheet and flatten slightly with the back of the scoop. Sprinkle turbinado sugar on top if desired.
- Bake at 350°F for 12 to 15 minutes, rotating the pan once halfway through; edges should be set and lightly golden while centers remain slightly soft.
- Let cookies cool on the sheet for 6 minutes to finish setting, then transfer to a cooling rack to cool completely.
Notes
Measure grated zucchini packed but do not squeeze — the recipe accounts for its moisture. Pull cookies when the edges are set and centers are still slightly soft; they continue to firm as they cool. To freeze, flash-freeze on a tray then store in a freezer bag for up to 3 months.
