1 lb. round steak, cut into thin strips
1/2 c. sliced onion
2 tbsp. butter
1 can golden mushroom soup
1/2 c. sour cream
1/3 c. water

In skillet, brown meat and onion in butter until tender. Stir in soup, sour cream and water. Cover, simmer 45 minutes or until meat is tender. Stir now and then. Serve over noodles.