First crisp up the prosciutto. Heat your oven to 350 degrees, spread the prosciutto out on a baking sheet, and bake it for 10-12 minutes until it is stiff and crisp. I recommend using a Silpat if you have one.

Then move on to the bread and spread the outward facing sides of the slices with the butter.

Next spread the inside of the slices of bread with the mustard. Then add the MT Tam cheese on top of the mustard. MT Tam is very flavorful, and I didn't want it to overpower the mustard and prosciutto, so I just added a thin layer of cheese to each slice of bread. Adding cheese to each slice of bread holds the prosciutto in place. Lastly, sandwich the prosciutto between the two slices of bread, it will likely break up into smaller pieces at this point, but that is ok.

Heat a skillet over medium heat and add the sandwich. Toast each side for 3-5 minutes until golden brown. Slice the grilled cheese in half and eat immediately.