Preheat oven to 350°
Mix butter and Italian seasoning. Evenly spread butter on inside of hoagie rolls.
Layer 2 slices of mozzarella, 2 slices salami, 2 slices pepperoni and 2 slices ham. Top with 2 more slices of mozzarella or shredded cheese.
Once sandwiches are assembled, place into a large baking dish. Make sure they are tightly pressed together sideways with the open side facing up.
Bake for 10 minutes for a hot melty sandwich. (Bake longer if you prefer a really toasted sandwich.)