Stuffed Portabellas with Artichokes, Crab and Spinach Dec 31, 1999 INGREDIENTS:6 portabella mushrooms, stems removed 2 cups balsamic vinaigretteStuffing: ½ cup mayonnaise 8 oz. cream cheese, softened 1 cup fresh Parmesan cheese, shredded 13.5 oz. can of artichoke hearts, drained and...