A disposable piping bag comprising a pair of side panels having joined side edges, the bag having a substantially conical configuration, the side edges extending downward to a sealed or unsealed tip and extending upward to an opening along upper edges incorporating an integral resealable closure in the side panels. The resealable closure has corresponding and adjacent lengths of a closure having one or more mating male ribs and female sealing channels on the side panels extending along a width of the bag opening. In one embodiment, the piping bag has a configuration with a substantially frusto-conical lower portion, a substantially cylindrical mid-portion, and a substantially frusto-conical upper portion.