01 -
Cream together softened butter, pumpkin puree, brown sugar, granulated sugar, and vanilla until light and fluffy.
02 -
In a separate bowl, whisk together flour, baking powder, pumpkin pie spice, cornstarch, and salt.
03 -
Gradually add dry ingredients to wet mixture, mixing on low until just combined. Do not overmix.
04 -
Cover and chill dough for at least 30 minutes (or overnight) to ensure cookies bake thick and soft.
05 -
Preheat oven to 350°F (177°C) and line a baking sheet with parchment paper.
06 -
Scoop 2-inch balls of dough onto baking sheet and gently flatten into disks. Bake for 10-12 minutes, until set and no longer glossy on top.
07 -
Cool cookies completely on baking sheet before frosting.
08 -
Make frosting by whipping butter, vanilla, cinnamon, pumpkin pie spice, brown sugar, and powdered sugar until fluffy.
09 -
Frost cookies with piping bag or knife. Sprinkle with extra pumpkin pie spice if desired.