1 lb. ground beef
1/4 c. butter or salad oil
1 onion, chopped
2 tbsp. flour
1 can tomato paste
1 c. bouillon
Worcestershire sauce
Mushrooms
Salt & pepper to taste
3/4 c. sour cream

Saute ground beef and onion in hot oil. Add remaining ingredients except sour cream. Let simmer 30 minutes. Just before serving, add sour cream. Serve over noodles.