Hot chocolate bombs with marshmallows

marshmallow 12.5% , ingredients 12.8% , cocoa butter 12.8% , whole milk powder 9.7% , cocoa paste 8.1% , glucose-fructose irop 7.2% , whey powder 6.6% , milkfat 6.2% , water 5.9% , E322 2.0% , E428 2.0% , dextrose 2.0% , corn starch 2.0% , natural vanilla flavouring 2.0% , E100 2.0% , E141 2.0% , E162 2.0% , milk chocolate 2.0%