Preheat oven to 350 degrees and line baking sheets with parchment paper or silicone mats.
In a separate bowl, whisk flour, cinnamon, and pumpkin spice. Set aside.
In a stand mixer (or using a hand mixer) beat the butter and granulated sugar on high for 2-3 minutes.
Add pumpkin and beat on medium for about 1 minute. Scrape down the sides of the bowl to incorporate everything.
In a small bowl, combine egg, vanilla extract, baking powder, and salt. Add to butter and pumpkin mixture and beat on medium for 30 seconds to 1 minute.
Beat in flour ½ cup at a time, mixing each addition until just combined. Scrape down the bowl as you go. Don't over mix.
Place a sheet of wax paper down and add a portion of the dough. Roll dough into a long log and add another piece of wax paper on top. Roll the dough ⅜" thick. Place in freezer on a tray. Continue rolling out the remainder of the dough.
Let the dough sit in the freezer for 15-20 minutes until it is almost solid and no longer sticky, but not frozen solid.
Use cookie cutters to cut the dough into shapes. Place on lined cookie sheet. Re-roll and re-freeze dough when necessary. Continue to roll and cut dough until the dough is gone.
Bake cookies at 350° for 12-15 minutes for ⅜" thick cookies (11-14 for ¼" thick cookies). Cookies are done when the top of the cookie is no long shiny, but appears more matted and the bottom edges are brown.