Thaw hen, if frozen. Rinse hen with cold water and pat dry. For stuffing, in a small saucepan combine water and margarine or butter; cook until margarine melts. Remove from heat. Stir in croutons, fruit bits, onion, and bouillon granules.
Spoon stuffing into body cavity. Combine mayonnaise and poultry seasoning; coat hen with mayonnaise mixture.
Place hen, breast side up on a rack in a shallow roasting pan. Roast, uncovered, in a 375 degree F oven for 1 to 1-1/4 hours or until drumstick moves easily in socket.
Meanwhile, in a small saucepan combine cranberries, brown sugar, and orange juice concentrate. Bring to boiling. Reduce heat and simmer, uncovered, for 3 to 5 minutes or until cranberry skins pop.
Serve with cranberry sauce, if desired. Makes 1 serving.