1 cup unsalted butter, softened 1/2 cup granulated sugar 1 cup packed dark brown sugar 2 large eggs 2 cups flour 3/4 tsp baking soda 1 tsp salt 1 tsp pure vanilla extract 4 cups semisweet chocolate chips Cream the butter at high speed until fluffy Add the sugars and beat until light and fluffy (about 4 minutes) Beat in eggs, one at a time, until completely mixed In separate bowl, mix flour, salt and baking soda Add to the butter mixture at low until just combined Add vanilla extract and beat on medium speed, scraping bowl, until blended Add chocolate chips and mix till thoroughly combined Drop heaping spoonfuls of batter 2 inches apart Bake for 11 minutes at 350 degrees, turning tray once, until golden brown around edges