Fire up the grill or the fire pit, Make sure its nice and warm
Take your Bananas (with the peel on) and cut open the long way as if its a sandwich but keep the peel and Dont cut it from tip to bottom just enough in the middle.
Place each banana on its own tin foil piece. Then stuff the banana with the marshmallows and mini chocolate chips. Wrap up the banana boats tightly in the tin foil and place on the grill and fire for about 10 minutes. This will melt the marshmallw and chocolate insides.
Carefully using your tongs, take off the fire and enjoy.