Wikisimpsons - The Simpsons Wiki
Moon Pies are a product made in the Future.
The product is seen for sale at the Kwik-E-Mart along side a number of other products including Soylent Green, Soylent Brown, Venus Pies, Saturn Pies, Venus-Maid Raisins, Hostess Fruit πs, and Infra-Red Vines.
 Behind the Laughter
The product is a parody on Moon pie.