Stuffed Mushrooms
["8 oz. pkg. large fresh mushrooms", "1/4 c. chopped onion", "2 Tbsp. margarine", "1/4 c. seasoned bread crumbs", "1/4 c. shredded cheese of your choice (Cheddar, Swiss)", "2 Tbsp. Parmesan cheese", "1 tsp. parsley flakes", "1/8 tsp. pepper", "1/4 tsp. dry mustard", "dash of salt"]
["Remove stems from mushrooms; chop stems.", "Combine in 1-quart casserole, stems, onion and margarine.", "Microwave on High 2 minutes.", "Stir in bread crumbs, cheese and seasonings; mound in caps.", "Microwave 2 to 2 1/2 minutes.", "Rotate 2 times while cooking. Heat thoroughly."]
["mushrooms", "onion", "margarine", "bread crumbs", "shredded cheese", "Parmesan cheese", "parsley flakes", "pepper", "dry mustard", "salt"]