Place cream, sugar, and butter in a large microwavable cup or mixing bowl. Cook at normal high heat for 2 to 2 ½ minutes until the butter is melted and the mixture is at a soft boil.
Sift confectioners sugar and dark cocoa powder together, mixing well. Set aside. Once chocolate is chilled and firm, use an ice cream scoop or any other melon baller that measures one inch.