Tales from the Darkside (1984)

Season 1: Episode 13

A young girl fleeing her boyfriend finds herself in a small country home with a genial older couple. They take pity on her and invite her in, and even invite her to their special anniversary dinner. After getting her set up in the hot tub with plenty of wine, they start pouring vegetables in. As she passes out, the girl realizes exactly how the couple will be having her for dinner.