Years ago I worked as a waitress at The Victorian Restaurant in Ogden, Utah. There were three versions of this sandwhich on the menu and they were all yummy! You can add any kind of sauce, meat, and topping you want.
Toast 6 halves of the hoagie rolls in the oven on a cookie sheet. Prepare packaged alfredo sauce in a sauce pan, follow directions on the package.
Place the hoagie rolls on oven safe baking dish, top with slices of ham and turkey. Top with 1/4 cup of alfredo sauce on top of meat. Sprinkle 1/4 cup of shredded cheese on top of alfredo sauce. Sprinkle cooked chopped bacon on top of cheese.
Bake in preheated oven at 350 until the cheese is melted and the sauce is bubbly.
Eliminate the ham and substitute the bacon for sauteed mushrooms.
Substitute the ham for roast beef and substitute green chilis for the bacon.