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.