Preheat oven to 375° F. Combine flour, baking soda and salt in small bowl.
2 cups all-purpose flour, 1 teaspoon baking soda, ½ teaspoon salt
Beat butter, granulated sugar, brown sugar and vanilla extract in large mixer bowl until creamy. Add eggs, one at a time, beating well after each addition. Gradually beat in flour mixture.
1 cup butter, ¾ cup granulated sugar, ¾ cup packed brown sugar, 1 teaspoon vanilla extract or paste, 2 large eggs
Hand-stir in chips. Drop by rounded tablespoon onto un-greased baking sheets lined with parchment.
6 ounces semi-sweet chocolate chips , 6 ounces dark chocolate chips
Bake for 9-13 minutes, depending on your preference of crisp.