Stuffed Mushrooms (pieczarki nadziewane)

[janradder]

1 lb. mushrooms
2 onions, chopped
3 T butter
1/2 cup bread crumbs
1/2 cup sour cream
1/2 cup chopped parsley
salt and pepper to taste

Clean the mushrooms and remove their stems. Chop the stems up and set them aside. Arrange the mushroom caps in a greased baking dish. Preheat the oven to 375˚F. Lightly brown the onion in butter, then add the chopped stems and cook for about 3 minutes. Stir in bread crumbs and sour cream, and mix well. Add parsley, then add salt and pepper to taste. Cook 1 minute more. Fill each cap with stuffing and bake for 15 minutes.