1 lb. brown sugar
2/3 c. butter
2 2/3 c. flour
2 tsp. baking powder
1 tsp. salt
3 eggs
5 oz. chocolate chips
1 tsp. vanilla

Melt brown sugar and butter over low heat, until smooth. Let cool slightly. Mix dry ingredients (except chips). Add sugar mixture to dry. Add eggs. Add vanilla. Stir in chocolate chips. Bake in greased 9x13 inch pan at 350 degrees for 25-30 minutes.