Let them cool on a rack before icing.
1/2 cup of butter
1/3 cup of whipping cream
4 cups of icing sugar
Cream the butter and start adding the icing sugar a bit at a time. Add the cream a bit at a time. Alternate until everything is in the bowl. Give it a scrape. Turn your beaters on high and whip the mix until the icing turns white (that's the air).
Ice your cupcakes however you want. I topped mine with an organic coffee bean from Oso Negro Roastery in Nelson, BC. (Oso Negro means Black Bear in case you didn't know. We have plenty of those in this province).