Tuna Casserole
["1 Tbsp. chopped onion", "1 can mushroom soup", "7 oz. canned tuna", "3/4 c. crushed potato chips", "1 tsp. butter", "1/3 c. milk", "2 c. cooked noodles"]
["Cook chopped onion in butter until soft.", "Mix with mushroom soup and milk.", "Add tuna.", "Mix with cooked noodles.", "Bake at 350\u00b0 for 20 to 30 minutes.", "Top with potato chips before baking."]
["onion", "mushroom soup", "tuna", "potato chips", "butter", "milk", "noodles"]