Break up the chocolate into single squares and place in a microwave safe bowl. Microwave for 1 to 2 minutes, or until melted, checking every 30 seconds. Remove from the microwave.
Using a cocktail stick to help you, dip each marshmallow in the melted chocolate. Be quick before the chocolate sets.
Once all of the marshmallows are covered then place a Smartie® or each of the marshmallows and lay on a plate lined with baking parchment.
Place in the fridge until the chocolate is set and hardened, about 20 minutes (if there are any sweets, or chocolate, left you can eat and enjoy them!). Remove from the fridge and transfer to a serving plate and serve.