Ingredients
Equipment
Method
Prepare the zucchini
- Trim ends and grate zucchini on the large holes of a box grater; place grated zucchini in a clean towel or fine sieve and press gently to remove about one-third of the surface liquid, then set aside for 5 minutes.
Make the dough
- Preheat oven to 350°F and line a baking sheet with parchment; in a large bowl cream the softened butter and brown sugar until smooth, then beat in the egg and vanilla until combined.
- Whisk together flour, rolled oats, baking soda, baking powder, cinnamon, and salt in a separate bowl, then fold the dry mix into the butter mixture until just combined.
- Fold the drained grated zucchini and chocolate chips (and nuts if using) into the dough.
Chill and shape
- Cover and chill the dough for 20–30 minutes to firm the butter and hydrate the oats; scoop 1.5-tablespoon mounds onto the lined baking sheet about 2 inches apart and lightly press tops if desired.
Bake
- Bake at 350°F for 11–13 minutes until edges are set and lightly golden but centers still look soft; let cookies rest on the pan 5 minutes before transferring to a wire rack to cool completely.
Notes
Press the zucchini only gently—removing too much moisture makes dry cookies. If dough seems very wet after adding zucchini, add 1 tablespoon flour at a time. Chilling the dough 20–30 minutes prevents excess spreading; if using frozen zucchini, thaw and drain completely and plan to add 1 tablespoon extra flour.
