1. In a medium bowl combine cake flour, baking powder, pumpkin pie spice, cinnamon and salt. Set aside.
2. Using an electric mixer cream butter and sugar. Add in eggs one at a time stirring after each addition followed by vanilla then pumpkin puree. Gradually add in flour mixture until combined.
3. Chill dough for at least one hour in refrigerator.
4. Preheat oven to 350 degrees Fahrenheit. Line baking sheets with parchment paper.
5. Roll 3 tablespoons of dough into a ball. Use flour on your hands if needed. Place ball on baking sheet and flatten to about 1/2 inch thick, molding sides to keep round shape if necessary. Continue with remaining dough, placing each 2 inches apart.
6. Bake in preheated oven for 10-12 minutes just until bottoms begin to lightly brown. Cool for a few minutes on baking sheet, and transfer to a wire rack to cool completely.

Pumpkin Buttercream Frosting

1. In a medium bowl combine confectioners sugar, pumpkin pie spice and cinnamon and set aside.
2. Using an electric mixer combine butter and pumpkin until combined. Gradually add in confectioners sugar.
3. If frosting is too thick, add more pumpkin puree, milk or a water until desired consistency is reached. If frosting is too thin, add in a little more confectioners sugar.
4. Frost cookies and set on aside for frosting to dry.