Preheat the oven to 350 degrees F. Lining a baking sheet with parchment paper, a baking mat, or lightly grease it.
Sift together the flour, baking soda, salt, and cinnamon together, and set aside.
In a large bowl add the butter, sugar, and brown sugar, Beat with an electric mixer until well combined. Add the egg and mix in.
Add the dry ingredients and mix until well blended.
Mix in the zucchini, carrots, and nuts until blended.
Drop by large rounded teaspoons onto the prepared baking sheet.
Place in the preheated oven and bake for 13 to 15 minutes.
Cool on a cooling rack until cooled.