Beef Stroganoff with back

1 lb sirloin steak, cut into slices 8 ounces button mushrooms , sliced 1 medium onion , diced 1 tablespoon Dijon mustard 1/4 cup beef broth 2 tablespoons[...]

1 1/2 lbs sirloin, pounded and cut in strips 2 tablespoons salt 1 tablespoon pepper 1 tablespoon garlic powder 1/4 cup flour 2 tablespoons olive oil 2[...]

2 lbs top round steaks , cut into strips salt and pepper 4 tablespoons butter 4 tablespoons flour 3 scallions , sliced 1 (10 1/2 ounce) can beef broth 1[...]