I thought you were saying "Children of the Corn: Apple Pie" was going to be the title of the next installment. Then I thought maybe you misheard someone saying "Malachi." But after watching that, I don't think that could be anything but apple pie. It's been a while since I've seen the movie, but I sure don't remember anybody yelling about apple pie.
A boy preacher named Isaac goes to Gatlin, Nebraska and gets all the children to murder every adult in town. A young couple on a road trip stop in Gatlin to report a murder and seek help, but the town seems deserted. They are soon trapped in Gatlin with little chance of getting out alive.