In a large skillet combine the ground beef, onions, and mushrooms. Cook over medium heat until the ground beef is browned and the onions and mushrooms are tender.
While the ground beef is browning cook the noodles according to the directions on the package. Once they are cooked drain and set aside.
Season the meat mixture with the garlic salt and pepper. Add the soups and sour cream and stir until well combined. Add the chopped parsley and mix in. Serve.