2 8oz tubs of mascarpone cheese
1/2 cup pumpkin
1/4 cup butter softened
1/2 tsp vanilla
5 cups powdered sugar
1 tsp cinnamon
Mix the mascarpone and butter with electric mixer until smooth. Mix in the pumpkin, vanilla and cinnamon. Add the powdered sugar 1 cup at a time.
I used a piping bag but it goes on very well with a offset spatula also.