We read about "Lykaion's Feast" in Ovid—the king of Arcadia butchering a slave, cooking him ("boiled or broiled?" Ovid says), and serving him to Zeus. Zeus was not pleased, and blasted his house with thunderbolts. He also turned Lykaion into a wolf.
We mentioned that often these stories of humans being served to gods at some feast or banquet (and there are several) might be remnants of the practice of human sacrifice. Always, though, the gods are not pleased, and harshly punish the ones who dared offer them such fare. There's a moral here, of course: "Hey—don't sacrifice humans to the gods." But one wonders if it's really, "Hey—don't sacrifice humans to the gods . . . anymore."
So interesting that this summer, the archaeological team excavating Mt. Lykaion in Arcadia, the earliest known site where Zeus was worshiped, should uncover a human skeleton among the remains of sacrificed animals at the altar there.
Here are links, if you'd like to read about it:
Was Skeleton Unearthed in Greece a Human Sacrifice to Zeus? [HISTORY.com]
David Romano Reflects on Mt. Lykaion Discovery [The American School of Classical Studies at Athens]
Human burial found in the middle of sacrificial altar at Mt. Lykaion [Archaeology News Network]
The official website of the project: Mt. Lykaion Excavation and Survey Project