I modified a recipe for Caramel Apple Dip by reducing the sugar a bit to make an easy caramel-y cream cheese frosting for cakes (so far I've used it on an applesauce cake I make quite a bit but I think it would be good on any spicy cake, especially a carrot cake).
Caramel-y Cream Cheese Frosting
8 oz cream cheese, softened
1/2 cup brown sugar
1 teaspoon vanilla
Whip cream cheese until fluffy, then add brown sugar and vanilla and whip some more until smooth.