Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   1      pound         flounder or haddock fillets -- - fresh or frozen
   1      tablespoon    butter or margarine
   4      teaspoons     lemon juice
   1      teaspoon      lemon rind -- grated
     1/8  teaspoon      salt
     1/8  teaspoon      pepper
     1/8  teaspoon      rosemary

Preparation:

Thaw frozen fish. Preheat oven to 350F (moderate). Divide frozen fish into 6 servings. Place in single layer in a baking pan. Mix fat, lemon juice, lemon rind, salt, pepper, and rosemary. Pour over fish. Bake for 25 minutes or until fish flakes easily when tested with a fork. Source: FOOD -- by U.S. Department of Agriculture