I'm originally from Nebraska, and when I was a kid, there was a chain of restaurants called, "Kings Food Host". They made a sandwich that was incredible, called a "Cheese Frenchee". The actual recipe is a secret (in fact, even people that worked there say they didn't know ALL the ingredients). I searched, and experimented, and this is as close as it gets! The chain is now closed, sadly, but there are some restaurants in the midwest that still serve this yummy sandwich. They also made one with tuna, called...you guessed it....a "Tuna Frenchee".