In a small bowl, combine bread crumbs, butter and parsley; set aside. Place scallops and mushrooms in a 9-in. microwave-safe pie plate. Combine wine or broth, lemon juice and seasonings; pour over scallop mixture.
Cover and microwave at 50% power for 1-1/2 minutes; drain. Sprinkle with crumb mixture. Cover and microwave at 50% power 3-1/2 minutes longer or until scallops are opaque, stirring once. Serve with lemon if desired.