4-6 strips of bacon, fried and crumbled; reserve fat
1 small onion, finely chopped
20-25 large mushrooms, stems removed
8 mushroom stems, finely chopped
Saute onion and mushroom stems in bacon fat until tender. Drain off excess fat. Mix crumbled bacon, onion and stems with softened cream cheese until the mixture is workable.
Stuff each mushroom and bake at 350 degrees for 10 to 15 minutes. Finish under the broiler just until tops are golden.