Tear aluminium foil into rectangles of about 20x15cm.
Peel the bananas and place one banana on each of your foil rectangles. Bring the edges of your foil rectangles up and squeeze the ends together, so you have a boat shape.
Push the chocolate buttons into the bananas (I use 7 small buttons, or 5 giant buttons per banana). Pour 2 tablespoons of fresh orange juice over each banana, and seal up the foil packets. Place the foil packets on a baking tray and cook for 10 minutes at 190 C. (The foil packets can also be placed on a BBQ.)
Enjoy banana scrummies on their own or with ice cream.