Note - I have given the base recipe here, if you want to decorate, I used the icing tubes for sale in supermarkets, much easier than the mess of mixing your own, not to mention having to pipe from a bag!
Night-And-Day Cupcakes - Nigella Lawson - How to be a domestic Goddess
Cupcakes:2 tablespoons cocoa powder
2 tablespoons boiling water
75g golden caster sugar
50g dark muscovado sugar
125g self raising flour
2 large eggs
125g very soft unsalted butter
1 teaspoon vanilla extract
1 tablespoon milk
Icing:200g icing sugar, sieved
100g cream cheese
juice of 1/2 a lime or 1 tablespoon lemon juice
12 chocolate coated coffee beans or dark chocolate (if not decorating in my manner!)
Preheat oven to 200c. Line a 12 whole muffin tin with paper cases. Mix the cocoa to a paste with the boiling water and set aside while you make the cupcake mixture.
Put the sugars, flour, eggs, butter & vanilla in a food processor and blitz to combine smoothly. Scrape the mixture down the sides, and then pulse while you add the cocoa paste and mil down the funnel. You should have a batter with a soft dropping consistency, if not, add a little more milk. Dollop into the cases in the tin and bake for about 20 minutes, until an inserted cake tester comes out clean.
Leave in the tn for 5 minutes then remove to a wire rack to cool completely. When cool, make the icing by beating together the icing sugar & cream cheese until soft. Add lime or lemon juice to taste & spread over cupcakes. Decorate with a coffee bean in the middle of each or shavings of chocolate as desired.