Put a spoonful of melted chocolate inside one cup on the silicone mold
Add a small amount of instant hot cocoa mix to half the pieces
and top the hot cocoa mix with marshmallows.
Pick up an empty chocolate piece and dip the edges into the melted chocolate.
Carefully place it on top of a filled piece and lightly press it into place.
Drizzle the chocolate over the top of the bombs to decorate.