Beat 10 min: 1 lb. butter 1 ½ c. sugar 2 c. brown sugar add: 3 eggs 2 tsp. vanilla Beat 3 more minutes. 6 c. flour 1 ½ tsp. salt 1 ½ tsp. soda ½ tsp. baking powder mix well then add: 4 c. chocolate chips Bake at 350 for 8-10 minutes. (Yields 8 dozen)