Flour Frosting(Not So Sweet)  
["1 c. milk", "4 Tbsp. flour", "1/2 c. butter", "1/2 c. shortening", "1 c. sugar", "2 tsp. vanilla"]
["Boil milk and flour until thick.", "Cool and add butter, shortening, sugar and vanilla.", "Beat until smooth."]
["milk", "flour", "butter", "shortening", "sugar", "vanilla"]