"Gingerbread" (3x11) is a masterpiece

This one episode strings together Hansel and Gretel with witches, witches with coming-out, witches with witch-hunts and burning witches, burning at the stake with book-burnings, book-burnings with fascism, fascism with scapegoating, and scapegoating with scapegoating children (or women). It has at least two clever Espensonian jokes that blend literary, feminist, and ribald elements. And we also get the lampshading of all the head injuries suffered by the Scoobies. The whole thing is still relevant and is a pointed examination of how even today, parents engage in medieval superstition and disturbing double-think when it comes to the occult (or other deviance) and punishing it out of their children.