Out of all the really famous fairy tales out there, Hansel and Gretel is perhaps the most morbid. Little Mermaid (at least in its original form) is probably the saddest (give or take a Little Match Girl). Sleeping Beauty has some of the creepiest undertones. Beauty and the Beast does, too. But all those stories (again, give or take a Match Girl) could be Disney-fied pretty easily. Take out some of the murder and self-mutilation and eye-gouging, and you have a perfectly nice, family friendly story about princesses being dainty.
Hansel and Gretel, on the other hand, has darkness woven into its very fibers. Try to sanitize it all you want, but the entire story is built around cannibalism, child abandonment, kidnapping, forced labor, and murder. Take out any of those elements and the story doesn't make any sense.
Not surprisingly, the good folks at Asylum have seen the potential for horror and made Hansel and Gretel, a modern-day horror film starring Dee Wallace from E.T. It's grisly and sick, just like the source material. Of course, this being an Asylum film, the movie is actually a rip-off of Hansel and Gretel: Witch Hunters, a minor hit that may (but most probably may not) get a sequel.
If you're a horror fan, check out my Slickster Magazine review of the film to see just how many body parts fly toward the camera. Spoiler alert: there's a lot.