A Tale Dark and Grimm by Adam Gidwitz

Recommended for ages 10 and up this is a classic retelling of Hansel and Gretel. Instead of staying in their own story Hansel and Gretel go on a storied adventure though other classic fairytales. Great for kids/parents who love to see a twist on their favorite fairytales. The author also has a sequel that focuses on Jack and Jill called In a Glass Grimmly.