Follow the cake recipes according to the recipe linked above and bake the batter in a standard cupcake tin lined with paper liners.
While they are baking prepare the fudge icing or ganache if you prefer
Watch the video tutorial for how to ice these!
Video
Notes
Storage Fudge cupcakes do not have to be refrigerated unless you are in hot climates, They will be fine at room temperature at 75°F for a day or two.For longer storage refrigerate for up to 4 days~ they will go stale before they go "bad"