If you are making the nose from fondant, do this first so they can dry and harden. Roll out your red fondant on a smooth surface dusted with icing sugar, and cut out circles using a 10mm round fondant plunger
Pre-heat your oven to 160C Fan/350F/Gas Mark 4 and line a cupcake tin with paper cases
To make the cupcakes, mix together the butter and caster sugar until smooth, ideally using an electric mixer
Add the eggs and milk, and whisk in
Add the self raising flour, cocoa powder and baking powder and whisk in gently
Divide the mixture between the cupcakes cases, and bake them for 20-25 minutes or until a skewer inserted in the centre comes out clean. Put them on a rack to cool completely
To make the buttercream, mix together the butter, cocoa powder and icing sugar with an electric mixer, when it starts to come together, add the milk and mix until smooth. You can add more milk if the buttercream is too stiff
Pipe the buttercream onto each cupcake using a piping bag fitted with a round nozzle, then smooth out the top with a palette knife. Or spread it on with a spoon
Stick the pretzels in the top for the reindeers antlers. (The pretzels will go a little soft from contact with the buttercream after a little while, so if you're making them in advance, wait to put the pretzels in to keep their crunch!)
Add the candy eyes, then add the chocolate button and stick the red fondant circle on top of the button using a little buttercream to make it stick
Store in an airtight container in a cool place, eat leftovers within 3 days