For this cupcake, I wanted to make a frosting in a class of its own and not just another cream cheese icing. At first I was not sure if the mascarpone would pair well with pumpkin since they are both smooth and creamy. The votes are in and it is a tasty and delicious winner! You will have much more salty caramel than you need, but that should not be a problem! Serve over ice cream, cake, or spread over cookies as a glaze when serving. Caramel will store in refrigerated for up to 2 weeks.