Stay Soft Chocolate Frosting
["1/4 c. cocoa", "3/4 c. sugar", "1 tsp. vanilla", "2 Tbsp. cornstarch", "1 c. milk", "1 tsp. butter"]
["Blend cocoa, sugar and cornstarch.", "Add milk and cook slowly until thickened, stirring constantly.", "Remove from heat, add vanilla and butter.", "Stir gently until cool and thick enough to spread."]
["cocoa", "sugar", "vanilla", "cornstarch", "milk", "butter"]