Fanny Mae Chocolate Fudge
["1/2 stick butter", "3 2/3 c. white sugar", "1 1/8 c. light brown sugar", "1 (13 oz.) bag Hershey's milk chocolate chips", "2 oz. unsweetened German chocolate", "12 oz. semi-sweet chocolate chips", "1 tsp. vanilla", "1 (13 oz.) can Pet milk", "32 large marshmallows", "2 c. walnuts"]
["Melt butter in pan.", "Add sugars and milk; stir until sugar melts (medium heat).", "Cover; boil for 5 minutes.", "Remove from heat.", "Stir in marshmallows until melted.", "Add chocolates, one at a time.", "Stir each until melted.", "Add vanilla and nuts.", "Pour into a very large, flat jelly roll pan (11 x 15-inch).", "Cool in fridge for 30 minutes.", "Makes about 10 pounds."]
["butter", "white sugar", "light brown sugar", "chocolate chips", "chocolate", "semi-sweet chocolate chips", "vanilla", "Pet milk", "marshmallows", "walnuts"]