1 (14 ounce) can sweetened condensed milk
1 cup semisweet chocolate chips
1 teaspoon vanilla extract
1. In a saucepan over medium heat, combine the sweetened condensed milk and chocolate chips. Cook, stirring constantly, until the chips are melted and the mixture is smooth. Do not allow it to bubble. Remove from the heat and stir in vanilla. Cool slightly before drizzling over a cake. If you want to make this ahead, it can be cooled and reheated in the microwave.