1 lb. confectioners' sugar, sifted
3/4 c. crunchy peanut butter
1/4 c. milk
1/4 c. butter, cut into 8 pieces
1/2 tsp. salt

Place all ingredients into a 2 quart glass casserole. Microwave 2 minutes until well blended. Spread into a greased 8 inch square glass dish. Refrigerate until firm.