3½cupspowdered sugar(more, if you prefer to pipe on the frosting instead of spreading)
Instructions
PREPARE THE CUPCAKES:
Preheat oven to 350 degrees F. Line muffin tins with cupcake liners. Spray the cupcake liners lightly with nonstick spray.
In a large bowl, use an electric mixer to combine the butter and sugar. Add the molasses and the egg and egg yolk.
In a separate bowl, sift together the flour, cocoa powder, ginger, cinnamon, allspice, nutmeg, cloves and salt. In a small bowl, dissolve the baking soda in the hot milk. Add the flour mixture to the butter/sugar mixture and stir until just combined. Stir in the hot milk mixture. Pour the batter evenly into the cupcake papers.
Bake for 20 minutes or until slightly springy to the touch. Allow to cool a few minutes in the pan and remove to a rack to cool.
PREPARE THE FROSTING:
In a large bowl, use an electric hand mixer to combine the frosting ingredients. Spread onto cooled cupcakes, or pipe on with a piping bag and a tip.
Notes
*To make things even easier, purchase a boxed gingerbread mix, prepare the cupcakes and frost w/ the homemade pumpkin frosting (these cupcakes will be better than the boxed mix though!)
*If your frosting is too thin, add more powdered sugar. If it's too thick, add more pumpkin puree.