Liz'S Baked Fish Creole
["2 lb. fish (cod, haddock, flounder, perch or sole)", "1 onion, minced", "2 Tbsp. butter or margarine", "1 c. canned tomatoes, chopped", "1 tsp. salt", "dash of pepper", "1 tsp. sugar", "1/4 tsp. Worcestershire sauce"]
["Saute onion in butter until limp but not browned.", "Add rest of the ingredients except fish.", "Simmer for 5 minutes to combine flavors.", "Place fish fillets in a baking dish and bake in a preheated 400\u00b0 oven for 25 minutes."]
["fish", "onion", "butter", "tomatoes", "salt", "pepper", "sugar", "Worcestershire sauce"]