Beef Stroganoff

Directions

1. 1
   Saute onion in butter over medium heat, in a 10 inch frying pan or 2 quart sauce pan, for about 5 minutes.
2. 2
   Add steak and continue to saute until meat is browned.
3. 3
   Stir in mushrooms, tomato soup and Worcestershire sauce.
4. 4
   Reduce heat to low and simmer until well heated about 5 minutes stirring every few minutes.
5. 5
   Just before serving add sour cream and stir until well blended.
6. 6
   Serve over steamed white rice or egg noodles.