Combine frosting, peanut butter & butter or margarine until well blended

stir in crumbs and mix well

form into 1"balls and chill overnight

melt together 1 1/2 cups semi-sweet chocolate chips and 3 tbls. crisco shortening in small pan over boiling water

reduce heat to simmer and dip balls in melted chocolate

place on pan and top with sprinkles of your choice.