#### **Step 1: Prepare the Cookie Dough**
Preheat oven to **350°F (175°C)** and line a baking sheet with parchment paper.
In a bowl, cream together butter and brown sugar until light and fluffy.
Beat in the egg and vanilla extract until smooth.
In a separate bowl, whisk together flour, baking soda, baking powder, salt, cinnamon, and nutmeg.
Gradually mix dry ingredients into the wet ingredients until just combined.
Stir in shredded zucchini and nuts (if using).
#### **Step 2: Bake the Cookies**
Drop spoonfuls of dough onto the prepared baking sheet, spacing them about **2 inches apart**.
Bake for **12-14 minutes**, or until edges are lightly golden.
Let cookies cool on the baking sheet for **5 minutes**, then transfer to a wire rack to cool completely.
#### **Step 3: Make the Cream Cheese Frosting**
In a mixing bowl, beat cream cheese and butter until smooth.
Gradually add powdered sugar and vanilla, mixing until fluffy.
Add milk as needed to reach desired consistency.
#### **Step 4: Frost & Serve**
Once cookies are completely cooled, spread or pipe frosting over the top.
Enjoy immediately or refrigerate for a firmer frosting.