In a similar spirit, the Juicy Lucy was invented in MN, though two different bars claim to be the ones that invented it.

A Jucy Lucy (or Juicy Lucy) is a stuffed cheeseburger with the cheese inside of the meat instead of on top, resulting in a melted core of cheese. It is a popular, regional cuisine in Minnesota, particularly in the Twin Cities of Minneapolis and Saint Paul. Two bars in Minneapolis claim to have invented the burger, while other local bars and restaurants have created their own interpretations of the style.