STUFFED MUSHROOMS (1)  =====================  Select large, firm mushrooms w/underside still tightly closed.  Wash in cold water and dry. Carefully remove stems and reserve.   Fillings:  ---------  1. Bacon-Cheese  ---------------  7 slices bacon, cooked, drained, crumbled  8 oz. cream cheese, softened  1 bunch green onions, finely chopped  dash garlic salt  1/3 cup mushroom stems, minced  3 tblsp butter, melted  Mix cream cheese, onion, garlic salt, mushroom stems, and bacon. Brush  prepared caps with melted butter, fill, place in shallow baking dish  with 2-4 T. water. Bake 20-25 min. at 350 deg.  2. Bleu Cheese  --------------  1/2 cup fine minced mushroom stems  1/4 cup fine chopped green onion  2 tblsp margarine  8 oz cream cheese  1/2 pkg bleu cheese salad dressing mix  2 tblsp milk  Saute mushroom stems and onions in margarine 5 min. Mix cream cheese,  dressing mix and milk. Mix in onion mixture. Fill prepared caps. Bake  20-25 min. at 350 deg.  3. Crab-Cheese  -------------...