Cheesesteak Sub Sandwich

Ingredients
- 2 tablespoons butter
- 1 medium onion, sliced into thin pieces
- 1 pound thin deli roast beef
- 1-2 tablespoons steak sauce (I used A-1)
- 1/2 teaspoon oregano
- Salt & pepper to taste
- 8 slices Provolone cheese
- 4 sub sandwich buns
Directions
- Melt butter in skillet and add thinly sliced. Cook until onions are soft and translucent.
- Add roast beef, steak sauce, oregano, salt and pepper to the onions.
- Place beef mixture on sub bread and top with cheese.
- Place sandwich under broiler for approximately 2 minutes until cheese is melted and beginning to brown.
- Makes 4 sandwiches.
Original source: relativetaste.net