Campbells Seafood Tomato Alfredo Recipe

Ingredients

• 1 tbsp. butter or margarine
• 1 medium onion, chopped
• 1 can (10 3/4 oz) Campbells cream of mushroom with roasted garlic soup
• 1/2 cup milk
• 1 cup diced canned tomatoes
• 1 lb. fish fillets (flounder, haddock or halibut) cut into 2 pieces
• 4 cups hot cooked linguine