2 lbs. round or sirloin steak, cut into 1/2 inch x 2 inch strips
6 tbsp. butter
1/2 c. chopped onions
1/4 c. flour
1/8 tsp. pepper
1 1/2 tsp. salt
1/2 c. water
1 can cream of mushroom soup
4 oz. can mushrooms
1 c. sour cream

Melt butter in large skillet. Add onions. Put flour in plastic bag and shake meat strips in flour until coated. Add meat to onions and cook and stir until browned Add salt, pepper and water. Cook and simmer gently until almost tender, 45 minutes to 1 hour, stirring occasionally. Add soup and mushrooms, stir to mix. Cook gently until beef is tender, another 30 minutes. At serving time, heat the mixture piping hot. Turn off heat and stir in sour cream. (If you boil the sour cream, it may curdle.) Serves 8. Serve over noodles.