Amanda turns into a ferocious beast and causes panic at school after eating Bunsen's beast cookies.
- Jeremy Rowley as Bunsen, Jerk Von Handsome
- Ben Giroux as Mikey Munroe
- Kari Wahlgren as Amanda Killman, Beverly
- Cheri Oteri as Miss Flap
- Jeff Bennett as Bob, General Lance Justice
- Phil LaMarr as Ken
- This episode’s title is a reference to the Sesame Street character with the same name.
- The title card is shared with that of "Spelling Beast" except all the letter 'O's look like cookies.