Preheat oven to 350°F.
In a stand mixer (or with an electric mixer), cream together granulated sugar, brown sugar, and butter.
Add vanilla, then add the eggs one at a time, beating until fluffy.
In a small bowl, whisk together all-purpose flour, salt, baking soda, and baking powder.
Gradually add the flour mixture to the wet ingredients and mix until combined, then mix in the butterscotch chips.
Scoop onto an un-greased cookie sheet and bake for 8-10 minutes.
While the cookies are still warm, use a silicone spatula to gently press the circumference of each cookie into a perfect circle; let them cool and set before transferring to a wire rack.