Burger cupcakes

I saw these whilst doing some cupcake research and I had to try them!

Really simple
Bake 12 vanilla cupcakes,12 chocolate cupcakes and 1 amount of buttercream

Bake the vanilla cupcakes and the chocolate cupcakes leave to cool, make the buttercream divide into 3 colours red, green and yellow. Remove the vanilla cupcakes from their cases and cut in half, remove the chocolate cupcakes and cut the tops off to form a flat burger. Place the chocolate burger on top of the bottom cupcake bun, pipe the icing one colour at a time yellow,green then red!, put the top half back on! Done