Stuffed Mushrooms

1 lb. medium size mushrooms, chop stems
6 Tbsp. butter
1/4 cup finely chopped onions
2/3 cup soft bread crumbs
1 env. onion broth mix

Saute chopped mushroom stems and onon in 4 Tbsp. butter. Add crumbs and onion broth, mix well. Brush mushroom caps with remaining melted butter and fill with onion mixture. Broil 3 minutes about 4 inches from heat.