An old camping favorite because it creates no dirty dishes, similar to a dump cake, the chocolate cake mix is added to an orange then cooked in the coals.
Slice the top off the orange and keep it for later.
Using a sharp spoon scoop out the orange, being careful not to put a hole in the side, or expose the bitter pith. Leave the base of the orange's fruit about a quarter way up, filled with orange juice.
Scoop in 3 tablespoons of chocolate cake mix. This may be more or less depending on the size of the orange.
Place the lid on the orange, then position in the coals. Try to achieve a hot heat, about 350 degrees F (180 degrees C). It is not necessary to bury the orange.
After 10 minutes take off the lid and check if the cake is cooked through. If cooked remove and serve, if not, continue cooking until done.