Preheat your oven to 350 degrees. Line a 12 cup muffin tin with paper liners or grease one 9 inch cake pan. Set aside.
Whisk together the flour, cocoa powder, baking soda, cinnamon, and cayenne pepper. Set aside.
In the bowl of an electric mixer cream together both sugars and the soft butter until fluffy, about 3 minutes. Stir in the milk, egg and vanilla.
Alternately add the dry ingredients with your hot coffee or water. Make sure you scrape the sides incorporating the ingredients well.
Fill your cupcake liners 3/4 full or pour batter in your prepared cake pan. Bake cupcakes 12-15 minutes or until a toothpick comes out clean. Bake cake 25-30 minutes or until a toothpick comes out clean.
Dust your finished cakes with powdered sugar or top with a chocolate ganache.