Separate the tops and bottoms of your rolls and place the bottoms in an 11" x 7" baking dish or on a baking sheet. Prep the bread by spreading a thin layer of mayo on the tops and bottoms of the rolls.
Cook the steak meat in a skillet, adding salt, pepper, garlic powder, and onion powder. When done cooking drain off any excess liquid and set aside.
Saute the pepper and onions until they are tender. Drain off any excess liquid and set aside.
When the meat, onions and peppers have finished cooking spread the steak, then peppers and onions evenly over the bottom pieces of bread in the baking dish.
Place a layer of provolone cheese over the peppers and onions.
Place the top pieces of bread on top of the cheese.
In a small bowl combine melted butter and 1 tablespoon of finely diced raw onions. Then brush the tops of the bread with the butter mixture.
Cover with foil and bake for 10 minutes, then remove foil and continue baking for another 10 minutes (or until cheese is melted).