In a mixer, beat together butter and sugars until light and fluffy.
Beat in eggs and vanilla.
Add in flour, salt and baking soda. Mix to combine.
Add in butterscotch chips and mix again, just until combined.
Scoop dough onto a parchment paper covered baking sheet. About 2 inches apart.
Sprinkle dough with a pinch of salt.
Bake in a 375 degree F oven for 9-10 minutes or until beginning to brown around the edges. Do not over bake. Allow to sit on baking sheet for 2 minutes and then remove to a rack to cool.