Two quickies that I've read and that have been languishing in my drafts:
Paama's husband is so much trouble that she left him behind and returned to her parents. He's traveled to meet her, and his arrival heralds a string of problems: he fills empty places and paranoia in his soul with food, and his first act as a village guest is eating the prize peacock. While a familiar spider man shows up in the story, Paama has a few tricks up her sleeve as well, and this marks her as someone to receive the chaos stick...
While there are madcap bits to this story, Paama wrestles with some pretty big questions, including what she'd do if she could change the future--and what might happen if she did.
Coming in under 200 pages, this is a great plane-length read.
Chitra Banerjee Divakaruni is probably best known for her adult fiction, including Palace of Illusions and Mistress of Spices. In my head, this book is MG, though it may have been marketed as YA. Anand, a young boy who works in a tea shop, is given an opportunity to be charitable, and this is the start of a grand cross-country adventure during which he must battle demons, learn from his wise old mentor, and put up with an annoying girl to protect a magical conch that must be returned to its owners.
That doesn't necessarily sound so different, I know, but the choice made at the end of the book (it's got a sequel, which I haven't read) was something I found very surprising, and not something I think gets considered in most books marketed for children.