Preheat oven to 350. Line a baking sheet with parchment paper or silicone mats and set aside.
In a mixing bowl, whisk together the flour, baking powder, baking soda, salt, ground cinnamon and nutmeg.
In a large mixing bowl, beat the 1 cup of butter with the sugar for 1 minute with your mixer on high speed.
Add in egg and vanilla and beat an additional minute.
Beat in the pumpkin.
Add in the dry ingredients and mix slowly on low speed until just combined.
Use a cookie scoop to drop the cookie dough at least 2 inches apart on your prepared pan.
Bake at 350 for 11-12 minutes or until the tops of the cookies are set.
Remove from oven but let cookies sit on the baking pans for 5 minutes, then transfer to a cooling rack.