Have all the ingredients at room temperature.
Preheat oven to 350 (I did 325 for altitude and baked for 14 minutes)
Over a sheet of waxed paper, sift together the flour, baking soda and salt. ( I used 1/2 tsp of salt because I use salted butter). Set aside.
In the bowl of an electric mixer fitted with the flat beater, beat the butter on medium-low speed until smooth, about 30 seconds. Add the brown and granulated sugars, increase the speed to medium and beat until slightly fluffy, about 1 minute, stopping the mixer occasionally to scrape down the sides of the bowl. Add the eggs one at a time, beating well after each addition, then beat in the vanilla (I use slightly less vanilla), stopping the mixer occasionally to scrape down the sides of the bowl. Reduce the speed to low, gradually add the flour mixture and beat until just combined, Stir in the chocolate chips.
Drop the dough by rounded tablespoons onto a cookie sheet. Bake until golden brown 10 - 14 minutes. Cool for 5 minutes on pan before removing.
Go to full version of