Step 1

Preheat oven to 180°C/160°C fan forced. Line 2 baking trays with baking paper.

Step 2

Place the packet cake mix in a large bowl. Add the choc bits, peanuts, coconut and marshmallows. Make a well in the centre. Add the butter and egg. Use a spatula to stir until well combined.

Step 3

Roll heaped tablespoonfuls of the mixture into balls. Place on prepared trays, allowing room for spreading. Flatten slightly then bake for 10 minutes. Set aside on trays for 5 minutes to cool slightly before transferring to wire racks to cool completely.

Step 4

Place the icing mix and boiling water in a bowl. Stir until smooth. Drizzle icing over the biscuits. Working quickly, sprinkle with the extra choc bits, peanuts, coconut and marshmallows. Set aside for 15 minutes or until icing is set then serve.