You'll Need: 9x13 pan Nonstick Foil Brown Butter Chocolate Chip Cookie Bars Ingredients 2½C. Flour 1 tsp. Baking Soda 1 tsp. Salt 1C. dark brown sugar ½C. White Sugar 2 sticks butter 2 Eggs 2 tsp Vanilla 2 cups semisweet chips or 10 ounce bag Guittard super cookie chips Instructions Cook butter in a skillet