Mock Marshmallow Frosting
["2 1/2 Tbsp. flour", "1/2 c. milk", "1/2 c. softened butter", "1/2 c. sugar", "1/2 tsp. vanilla extract"]
["Place flour", "in", "a small saucepan.", "Add milk gradually, stirring", "constantly", "until", "mixture", "is", "smooth", "and blended. Place mixture", "over moderately low heat (about 225\u00b0) and cook, stirring", "constantly,", "until", "thickened", "and smooth.", "(Mixture will be", "fairly", "stiff.) Cool.", "Place butter in the small bowl of an", "electric mixer and beat until creamy.", "Add sugar gradually and beat", "until", "mixture is light.", "Add the cooled flour mixture and beat", "at high speed until the mixture is light and fluffy, about 1 to 2 minutes.", "Gently fold in vanilla.", "Makes enough to frost the top of a 9-inch cake."]
["flour", "milk", "butter", "sugar", "vanilla extract"]