Cut fish into five to six serving pieces. If frozen, let thaw one hour.
Arrange in baking dish. Combine soup, milk, salt, pepper and onion salt.
Pour mixture around fish. Sprinkle with extra black pepper and parsley
flakes. Dot with butter. Bake in moderate oven, 350 degrees, about 20 to
25 minutes, or until fish is fork tender. Serves three to four.