Ingredients * 1/3 cup butter or margarine * 1/3 cup firmly packed light brown sugar * 1/3 cup sugar * 1/3 cup whipping cream * 1/2 teaspoon vanilla extract
Preparation * Combine first 4 ingredients in a heavy saucepan. Bring to a boil over medium heat, stirring constantly; boil 1 minute. Stir in vanilla.