Melt chocolate in the microwave until smooth. (You won't use all of it-save rest for later)

Pour into the 2 molds and spread to coat. Do not fill entirely as you want them to be hollow.

Chill in fridge at least 30 mins or until they easily pop out.

Sprinkle in the cocoa and load on some marshmallows into one half.

Use some of the extra melted chocolate to brush on the edges and seal the two halves together.

Drizzle on some chocolate and add sprinkles.

Freeze.

Heat milk to just about boiling,

Place bomb in mug and pour on the milk until it cracks open!

Stir and enjoy!