Ingredients

1 cup sugar2 tablespoons cornstarch1/2 teaspoon salt2 cups boiling water1/2 teaspoon vanilla extract1/4 cup butter

Preparation

In a small saucepan, combine the sugar, cornstarch and salt. Gradually stir in water until smooth. Bring to a boil; cook and stir for 15 minutes until smooth, thickened and clear. Remove from the heat; stir in vanilla and butter. Serve warm over cake.