Ingredients

1 stick(s) unsalted butter, softened

1 container(s) (8-ounce) mascarpone cheese, softened

3 cup(s) confectioners' sugar, sifted

1 teaspoon(s) pure vanilla extract

Dirctions

In a bowl, beat the butter until smooth. Beat in the mascarpone cheese until combined. Add the sugar and vanilla and beat until smooth. Refrigerate the filling until it is slightly firm, about 2 hours.

This filling is delicious with any cookie...