In the bowl, beat butter, brown sugar and sugar with a mixer until light and fluffy. Add in the vanilla and pumpkin. Mix until combined.
In a separate bowl, whisk together the flour, baking powder, baking soda, salt, cinnamon, nutmeg and allspice.
Add the dry ingredients to the sugar mixture and mix until combined. Stir in the chocolate chips.
The dough will be very soft. Use a spoon or cookie scoop to drop the cookie dough on a baking sheet.
Bake at 350 degrees for 10-11 minutes until the edges are set but the middles are still a little bit soft. When the cookies come out of the oven, lightly tap or drop the cookie sheet on the counter (this helps the thinner/chewy factor of the cookies). Allow them cool 3-4 minutes on the baking sheet before removing to a wire rack to cool completely. Makes 3 dozen.