1 lb. flank steak
3 tbsp. vegetable oil
2/3 c. water
1 (3 oz.) can broiled, sliced mushrooms
1 env. onion soup mix
1 c. sour cream
2 tbsp. flour

Cut meat diagonally across grain in 1/4" strips (thin). Heat oil in skillet, brown meat quickly. Add water and mushrooms (including liquid), stir in soup mix; heat just to boiling. Blend sour cream and flour; add, cook and stir until mixture thickens (sauce will be thin). Serve with hot noodles. Makes 5 to 6 servings.