Trollz

Trollz is an American animated television series produced by DiC Entertainment (now DHX Media) and features the adventures of five teenage girls, who call themselves the Best Friends for Life, who use magic to help them with their everyday life as well as battling whatever magical creatures and problems they may find themselves up against. It's based on the troll doll created in the 1960s becoming one of the biggest fads in the world.

New Girl in Town (Episode 22)
The four girls Amethyst, Sapphire, Onyx and Topaz have been hypnotized by eating magic cookies cooked by the titular new girl in town.