News This Iowa restaurant is serving a chili burger on a cinnamon roll bun January 21, 2019 Brian Taylor Carlson, Des Moines Register Comments Off on This Iowa restaurant is serving a chili burger on a cinnamon roll bun It can't get any more Iowan than the pairing of hot, hearty chili with sweet, sticky cinnamon rolls. What's even better? Putting them on a burger.