Butter one side of the the roll. Add mayo if using.
Top the buttered side with the shredded beef. (the butter or a layer of cheese helps prevent the roll from getting soggy)
Add cheese, and place under the broiler until melted. Watch it, it only takes a few seconds. Add sliced Pepperoncini and serve.
Notes
If making these for a party, use slider rolls. Preheat oven to 375 degrees.Place entire package of rolls into a 9x13" baking pan and remove the top half of the buns. (The buns should fit perfectly in the pan)Slather the shredded Mississippi Roast onto the mayor or butter covered buns so it is 1" thick. Cover the meat with slices of Provolone Cheese. Add the top of the roll. Cover pan in foil. Baking pan may now be placed in the refrigerator until ready to be cooked, or you can proceed with bakingBake the covered pan for 10 minutes, then remove the foil and bake for 10 minutes further, or until golden brown.