2/3 c. butter
2 c. brown sugar, packed
2 eggs
1 tsp. vanilla
2 c. flour
1 tsp. baking powder
1/4 tsp. baking soda
1 tsp. salt
1 c. nuts, chopped (optional)
1 (6 oz.) pkg. chocolate chips

Melt butter in saucepan. Remove from heat. Add brown sugar and mix well. Cool slightly. Add slightly beaten eggs and vanilla. Add flour, baking powder, soda and salt. Mix well. Add nuts. Spread in a greased 9 x 13 inch pan. Sprinkle chocolate chips on top. Bake at 350 degrees for 30 minutes. Cool in pan.