Clam Chowder
["1/2 stick butter", "1 onion, chopped", "2 cans minced clams", "2 cans New England clam chowder", "4 cans cream of potato soup", "1 qt. half and half"]
["Melt butter in large 13 x 5-inch pan.", "Add chopped onion and saute until onion is clear.", "Add clams, juice, soup and milk. Stir well.", "Bake in oven at 200\u00b0 for 4 hours."]
["butter", "onion", "clams", "clam chowder", "cream of potato soup"]