Peanut Butter Cake
["1 yellow cake mix", "1 1/2 c. sugar", "1 c. peanut butter", "1 c. milk", "1 tsp. vanilla"]
["Preheat oven to 350\u00b0.", "Bake cake as directed on package.", "For icing, mix sugar, milk and vanilla until sugar melts.", "Add peanut butter and cook until thickens.", "Spread on cake."]
["yellow cake", "sugar", "peanut butter", "milk", "vanilla"]