2 1/8 cups (2 cups plus 2 tbsp) all purpose flour 1/2 tsp salt 1/2 tsp baking soda 12 tbsp (1 1/2 sticks) unsalted butter, melted and cooled till warm 1 cup brown sugar 1/2 cup granulated sugar 1 large egg plus 1 egg yolk 2 tsp vanilla extract 1 to 2 cups chocolate chips
oven to 325. Adjust oven racks to upper and lower middle positions. Mix
flour, salt, and baking soda together in medium bowl, set aside.
by hand or electric mixer, blend butter and sugars until thoroughly
combined. Mix in egg, yolk, and vanilla. Add dry ingredients, mix until
just combined. Stir in desired amount of chocolate chips.
balls and place them on parchment lined cookie sheet. Bake, reversing
cookie sheet positions halfway through baking, until cookies are light
golden brown and outer edges start to harden yet centers are still soft
and puffy, 15-18 minutes (check at 13 minutes). Cool on cookie sheets
and store in airtight container.