Do you know of any children's book which was adapted, perhaps by another author, for adult readers?

In the world of pop-fantasy, a successful commercial formula is to take the old fairy tales and bring them alive in the epoch of their origins. The ancient gods and goddesses are portrayed as living characters with powers to affect the mundane. Mortals can travel into the otherworld of the gods to achieve impossibly heroic feats.

Or…

Non-pop and revealing the dark side of humanity… Roald Dahl has re-written many of the classic bedtime stories for children – such that one might no longer wish one’s kids to hear the new versions. Little Red Riding Hood does not get rescued by the kindly woodsman, but she walks out of Grandmother’s house wearing a wolfskin coat. Later, she visits the three little pigs and leaves with a pigskin suitcase. How often in history has the explorer heralded murder and exploitation?