Tales from the Cryptkeeper (1993)

S2E12 Chuck (and Melvin) and the Beanstalker

Self-absorbed Chuck and his less attractive brother, Melvin, head to a mysterious trader who proposes a deal: a bag of magic beans in exchange for Chuck's cherished horse. As anticipated, the beans sprout into a towering beanstalk, prompting the brothers to climb up and plunder the castle in the sky. However, their plans take a turn when they encounter an angry cyclops Beanstalker, forcing them to flee from its fury.