Pieczarki Nadziewane (Stuffed Mushrooms)

20 Mushrooms

2 tb Butter/margarine

1 sm Onions; minced

3 tb Bread crumbs, dry

1 tb Sour cream

1 Eggs; hard-cooked, minced

1 Eggs

1 tb Parsley; chopped

1/4 ts Salt

1/8 ts Pepper, black

20 sl Cheese, gouda; 1" square

-or swiss cheese Preheat oven to 400F. Grease 9 to 10 inch sqaure baking dish. Seperate mushroom caps and stems; set caps aside. Finely chop stem pieces. Melt butter over medium heat. Add onion; saute until soft, about 3 minutes. In bowl, combine sauteed onion, chopped mushroom stems, bread crumbs, sour cream and hard-cooked egg. In a bowl, beat egg with fork. Add to onion mixture. Stir in parsley, salt and pepper until blended. Pack about 1 rounded teaspoon stuffing mixture into each reserved mushroom cap. Arrange, stuffing-side up, in greased dish. Place 1 cheese square on each cap. Bake, uncovered, 20-25 minutes.