Philly Cheese Steak Sloppy Joes 1 tablespoon olive oil 1 lb ground beef 1 large onion, chopped 1 green pepper, chopped 3 tablespoons steak sauce, I like A-1 1/2 cup beef broth salt and black pepper, to taste 1 dash Worcestershire sauce (optional) 4 large hamburger buns 1 tablespoon butter, for toasting buns cheese sauce (recipe below) or provolone cheese (sliced) or Cheez Whiz Cheese Sauce 1 tablespoon butter 1 tablespoon flour 1 cup milk 1 cup provolone cheese (shredded)