Ingredients 6 tablespoons granulated sugar 3 tablespoons all-purpose flour 1/2 teaspoon salt 1 cup half & half 5 egg yolks 2 teaspoons vanilla extract 2 teaspoons vanilla extract 1 square (2 ounces) semi-sweet chocolate, Instructions Click to mark complete - In small saucepan, whisk together sugar, flour, salt, half & half and egg yolks until smooth. - Heat over medium heat until mixture is thickened, about 5 minutes, stirring constantly with a spoon or rubber spatula. - Remove from heat; stir in vanilla and chocolate. Continue stirring until chocolate is melted. Cool quickly. Fill cupcake. Notes To prevent a skin from forming, brush surface with melted butter. Stir before using.