Preheat oven to 275. Heat most of the orange juice (reserve a tablespoon or so), carrots, 1 tbsp. butter, soy sauce, and ginger until it boils. Stir in stuffing mix and onion. Let stand 5 minutes, then fluff with a fork. Place the fillets in a baking dish you can cover. Spoon half of the stuffing mixture onto half of each fillet. Fold the fillets over to loosely enclose the stuffing. Pour the remaining orange juice over the fillets and place a dot of butter on each. Place in oven for 6 minutes, turn, then heat for another 4. (An alternative is to put in the microwave for 3 minutes on high.) Garnish with a twist of orange or lemon peel.