Spiced Cream Cheese Frosting

I created this frosting to go on the apple layer cake that is found here. The frosting itself, though, was so good and had such a deep flavor that I think it would be delicious on any number of things.  I plan to try it on carrot cake, pumpkin bars, pretty much anything else that I can think of that uses a cream cheese frosting but that would also be good with cinnamon and maple.  It still has that nice tang of cream cheese, but it adds a lot of other flavors that give the frosting a very pleasing taste.

Makes about 4 cups (enough for one cake or 24 cupcakes)

8 oz cream cheese, softened
1/2 cup butter, softened
1/2 cup packed brown sugar
1 teaspoon cinnamon
1/2 teaspoon vanilla
3 1/2 to 4 cups powdered sugar

1. In bowl of an electric mixer, beat cream cheese and butter together until fluffy.  Add brown sugar and cinnamon and beat well.  Make sure there are no lumps of brown sugar in the frosting, beating more as needed to break up lumps.  Add vanilla and mix well.  Beat in 2 cups of powdered sugar to start, then add remaining 1 1/2-2 cups as needed to reach desired spreading consistency.