I can't seem to find one anywhere on the internet, the ones I do find seem to be only for cake.
Butter Rum Cream Filling: 3 tablespoons unsalted butter 1 cup confectioners' sugar 3/4 teaspoon light rum 2 teaspoons heavy cream
Soften the butter. In a mixing bowl, with the mixer at low speed, cream the butter and sugar until well mixed. Still at low speed, beat in the rum and heavy cream.
Thank Rachael Ray! I got her cookbook for christmas last year and it rocks!
That's the thing, I cannot find it on google. Thats where I first looked.