3/4 pound boneless beef top round steak, 3/4 inches thick
1 (10.75 ounce) can Campbell's(r) Healthy Request(r) Condensed Cream of Mushroom Soup
1 (14 ounce) can Swanson(r) Beef Broth
1/2 cup water
1 medium onion, sliced
3 cups uncooked medium egg noodles
1/2 cup plain yogurt
Chopped fresh parsley