Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   6      tbsp          butter or margarine
   1      large         onion -- chopped
   2      tbsp          flour -- minced
   2      tbsp          milk
   1 1/2  c             sour cream
   1 1/4  lb            mushrooms -- sliced
     3/4  tsp           salt
     1/4  tsp           pepper
     1/4  tsp           paprika

Preparation:

In melted butter, in large skillet, saute onion till golden. Sprinkle with flour; add milk and 3/4 cup sour cream; while stirring, bring just to a simmer. Then add sliced mushrooms, salt, pepper, and paprika. Simmer, covered, 5 minutes, stirring occasionally. Stir in remaining sour cream ; heat thoroughly, while stirring constantly. Serve at once.