Meanwhile, in 10-inch skillet, melt 1/4 cup butter over medium-high heat. Stir in 1 cup brown sugar, the apples and dash of salt; cook 4 to 5 minutes, stirring frequently, until brown sugar is dissolved and mixture boils. Boil 10 minutes, stirring frequently, until apples are tender and syrup thickens. Stir in whipping cream. Return to boiling; boil 3 minutes, stirring constantly, until mixture thickens and apples look glazed. Remove from heat; stir in vanilla.