1 (12 ounce) package vanilla frosting
1 cup brown sugar
1 (3 ounce) package instant vanilla pudding mix
1 (9 inch) prepared chocolate cookie crumb crust
In a medium bowl, cream together the brown sugar and pudding mix. Stirring constantly, beat in the brown sugar mixture until well blended. Divide the frosting into 4 portions; spread one portion over the top of the remaining frosting.
Mix the chocolate cookie crumbs and frosting with water until evenly coated. Place them on the frosting. Refrigerate overnight before decorating.