3 c. peanut butter
3/4 c. melted butter
1 box (3 3/4 c.) powdered sugar
3/4 c. brown sugar
1 tsp. vanilla

Mix all ingredients well. Spread evenly in greased 9 x 13 pan. Then melt 1/2 cup chocolate chips, 2 tablespoons butter. Spread on top, then refrigerate. Cut into about 1 inch squares.