Preheat oven to 350 degrees and line 2 cookie sheets with parchment paper.
Using a medium bowl, whisk together the flour, baking powder, baking soda, salt and pumpkin pie spice.
Using a large mixing bowl, beat together the brown sugar, ½ C sugar, eggs, pumpkin puree and vanilla until combined and smooth.
Beat in the butter until combined. Gradually beat in the dry ingredients until combined and smooth.
Using a small bowl, combine the sugar and powdered sugar.
Using a small ice cream scooper, scoop out some dough and drop it into the sugar mixture.
Completely coat the dough, remove the dough and roll it into a ball. Place onto the cookie sheet.
Repeat steps with remaining dough. Bake in the oven for 12-14 minutes or until the cookies are puffy. Remove from oven and allow to cool completely.