In the bowl of a stand mixer, the softened butter on medium speed just until smooth and lighter in color.
Add sugar, pumpkin, vanilla bean paste, baking powder, pumpkin pie spice, and salt . Beat until well combined, about 2 minutes. Pause to scrape down the sides of the bowl as needed.
Add the egg and mix until incorporated.
Once the egg is mixed in, add the flour and mix until it is all incorporated, scraping down the sides as needed.
Cover and refrigerate the dough for about two hours. It's OK to leave it in the mixture.
Once the cookie dough is sufficiently chilled, preheat the oven to 350℉. Line a baking sheet with a silicone baking mat or parchment paper and set aside.
Combine the ¾ cup of sugar and pumpkin pie spice in a small bowl, mixing until all the spice is incorporated.
Use a small cookie scoop to scoop dough. Lightly roll dough into ball and coat with pumpkin pie spice sugar mixture.
Place on a baking sheet and bake for approximately 10 minutes, until edges and bottom begin to brown.