Cut Oreo biscuits in half. And keep the side with the most icing. May need to practice!
Very gentle press MnM into the biscuit
Place a small amount of icing on the cupcake... And spread evenly across the top
Press the biscuit with the MnM on it; onto the side of cupcake with the icing acting like a a glue
Press a MnM on its side into the centre of the cupcake between the two biscuits to act like a nose
You can ad different colors and make it pretty