0 In a bowl, combine the melted butter, brown sugar, and the Dijon mustard. Mix together.
1 Spread some of the mixture in the bowl onto the bottom of a 9x12 baking dish. Save some of the mixture for later.
2 Add 3 slices of sourdough bread to the bottom of the baking dish.
3 Top each slice of sourdough bread with 2 slices of Swiss cheese, a good amount of ham, and then top the ham with another two slices of Swiss cheese, followed by a slice of sourdough bread to complete your sandwich.
4 Next, take the butter mixture you made earlier in the bowl, and spread it over the top of the bread.
5 Cover the baking dish in foil.
6 Bake at 375F for 15 minutes, take it out the oven, remove the foil and bake for another 10 minutes.
