-drained On sheet of foil, sprinkle soup mix on all sides of roast; top with mushrooms. Wrap loosely, sealing edges airtight with double fold. Place in shallow baking pan. Bake 375^ for 2 1/2 hours or until meat is tender. When meat is done, remove from oven. Open one end of foil and pour juices into saucepan. Juices may be served as natural gravy or thickened with flour. Lift meat to serving platter.