In a large mixer bowl beat butter with sugars.
Add in egg and vanilla and mix on medium until combined.
Add flour, baking soda, baking powder and mix on medium low until well mixed.
Add in carrots, oats, cinnamon and nutmeg and mix until completely combined.
Place two tablespoon sized scoops of cookie dough onto parchment lined baking sheets.
Bake at 375 degrees for 12-14 minutes or until bottoms of cookies are golden brown and slightly firm.
Allow cookies to cool completely on baking sheets.