Cassandra is usually top of the class, both at Greendale High School and at the Witch Academy. Fed up of Cassandra's taunts, Sabrina decides that a school fundraiser is the perfect oppertunity to prove that she is better than Cassandra.''''The winning girl is the one who sells the most cookies, but unfortunately, Cassandra has cast a spell on Sabrina's cookies to make them taste disgusting. With some help from Salem, Sabrina manages to reverse the spell, sell her cookies and prove that is better than Cassandra.moreless
It's never really explained in the episode why Sabrina initally assumes that all the monsters in town are her fault. Even after Sabrina discovers it was all caused by mortals cooking and eating Monster Mix, she still blames herself, even though there was no reason to believe Sabrina did anything to cause the mix-up.
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