Yes, that's a real restaurant. The Thunderbird Restaurant is in East Zion, Utah. The founder, Jack Morrison, spelled home made as "ho-made" back before the word "ho" got its current meaning.
Found at our pal Dan Piraro's new blog (he knows all about pies!): BizarroBlog
"Waiter, I'd like to order a slice of Sixth Street crack fiend a la mode, heavy on the cheap jewelry..." *ducks and runs*
--TwoDragons