2 c. smooth peanut butter
1 stick butter, softened
1 c. brown sugar
1 box confectioners sugar
1 tsp. vanilla
12 oz. chocolate chips

Mix peanut butter, butter, brown sugar, confectioners sugar, and vanilla. Spread (pat) in the bottom of a 9x13 pan. Top with 12- ounces chocolate chips which have been melted in top of a double boiler.