Preheat oven to 350° F.
Combine flour, baking powder, baking soda, cinnamon, ginger, and salt in medium bowl.
Beat butter and sugar in large mixer bowl on medium speed for 2 minutes. Beat in eggs, one at a time, then add pumpkin and vanilla extract and beat until smooth.
Stir in flour mixture and beat until combined. Drop batter by the teaspoon on parchment lined cookie sheets, about 2 inches apart, and bake for 10 minutes, or until springy to the touch.
Cool on baking sheets for 5 minutes, then place on wire racks to cool completely.