There's a subterranean city under Springfield popular for warehousing and storage. It's also where Kraft has aged cheese for decades. This is Springfield Underground.
If you're looking for a high-quality fast-food cheeseburger, apparently you'll have to head to Warrensburg or the suburbs of Kansas City for the experience.
I bet it won't be just macaroni, either. I bet someone will use farfalle (you know, the little bow tie lookin ones). Or shells. Or little tortellini's!