- Preheat the oven to 350°F and line a cookie sheet with parchment paper. 
- To a large microwave-safe bowl, add the butter. Soften in the microwave for 30 seconds. 
- Mix in the sugars. 
- Add the vanilla and egg until incorporated. 
- Pour in the flour, baking soda, pumpkin pie spice, and salt. 
- Fold in the white chocolate chips. (If you want the cookies to look like mine, reserve a few of the white chocolate chips to press into the tops of each cookie before baking.) 
- Using a 3-tablespoon scoop, drop dough onto the cookie sheet. (If you do not have a 3-tablespoon cookie scoop, you can use a tablespoon and just roll 3 total tablespoons into a ball.) 
- Bake for 11-13 minutes, or until the cookies are set. They will be puffy and should not appear wet. 
- Let the cookies come to room temperature before serving.