Step 1

Preheat oven to 350°F. In a large bowl, beat the butter until smooth and almost fluffy, about 2 minutes. Add the sugars and continue beating until the mixture is light and fluffy, about 4-5 minutes. Add the eggs and vanilla and beat until smooth again.

Step 2

In a separate bowl, whisk together all of the dry ingredients except the butterscotch chips. Gradually add this mixture to the wet ingredients, half at a time. Stir until fully combined. Add the butterscotch chips and stir well.

Step 3

Use a medium size cookie scoop (about a tablespoon in size) to drop the dough onto a large baking sheet lined with a silpat mat. Bake for 8-9 minutes. Remove from the oven before the cookies are browned and when they still look soft in the center. Let them cool on the same tray for 5-10 minutes; this will allow them to finish baking without overcooking.

Step 4

When the cookies are firm enough to handle, transfer them to a wire cooling rack and let cool completely.