Carefully cut into the bananas (with the peel still on) and slowly pull apart where you cut in forming a slit.
Break chocolate into small pieces and stick them into the slit in the banana.
Place bananas on the preheated grill and roast at 200° Celsius.
Grill bananas until the chocolate starts to melt. By the way don`t worry, it`s pretty normal that the peel of the banana will turn black. It doesn`t mean that you burnt your banana. They still will be delicious!