Heat oven to 350 degrees F.
Line sheet pan with parchment paper. Set aside.
Whisk together flour, pumpkin pie spice, baking soda, and salt. Set aside.
With an electric mixer, beat butter and sugars until well combined, 1-2 minutes.
Beat in egg.
Add pumpkin and continue to mix.
Stir in flour mixture.
Add white chocolate, stirring only to combine.
Use a cookie scoop or spoon to portion dough.
Roll each piece of dough into a ball and coat in spiced sugar.
Place on prepared baking sheet.
Bake for 13-15 minutes, until done.