Maple Glazed Salmon

1/4 cup maple syrup
1 tablespoon lemon juice
2 tablespoons soy sauce
1 teaspoon Dijon mustard
1/2 teaspoon finely chopped gingerroot, if desired
1 1/4 pound salmon fillet
2 tablespoons thinly sliced scallions

Mix all ingredients except salmon and scallions. Cut salmon into 4 serving pieces and place in shallow dish. Drizzle marinade over fish, reserving about 1/4 cup marinade to serve over cooked fish. Refrigerate fish about 30 minutes. Heat oven to 400°. Place fish in baking dish; set aside marinade. Bake 15 to 20 minutes, basting occasionally with marinade, until fish flakes easily with fork. To serve, drizzle reserved 1/4 cup marinade over fish; top with scallions.