Shape foil into the shape of a boat. Peel banana and slice lengthwise. Put banana into foil boat. Place chocolate bar on top of banana. If desired, add a dollop of peanut butter on top of chocolate.
Place marshmallows on top.
Place on coals and cook for approximately 10 mins. Caution, this will be very hot. This recipe can be used with any combination of fruit and cake mixes. Experiment and see what your favorite combination is. Pour the pie filling in the dutch oven.