Combine all of the ingredients for the cake in a mixer. Blend thoroughly and make sure that the ingredients are well-combined.
Spray some coconut oil on a cupcake baking sheet and pour the cake mixture onto the sheet.
Preheat the oven to 350°F. Afterwards, place the baking sheet into the oven for 10-12 minutes.
Meanwhile, make the frosting of the cupcakes. Mix the hot coffee with chocolate and sweetener until all is melted and combined. If necessary, place the mixture in the microwave for 10-15 seconds.
Remove the cupcakes from the sheet and frost with the chocolate coffee mixture. Serve and enjoy.
Notes
Depending on the pan size you use and the desired size of cupcakes, this makes up to 30 mini cakes. You can use cocoa powder in place of coffee.