A little more prep and Triple chocolate surprise dump cake with nuts!
14-16" Dutch Oven with coal lid.
Two chocolate bundt cake mixes.
Dark Chocolate pudding, baking (semi sweet)Chocolate chips, butter, nuts.
Dried or powdered milk.
Depending on the heat, some aluminum foil to line the D.O.
I've made this in my wood stove (VERY HOT), on the bed of hot coals.
If necessary, line the D.O with foil (for a very hot fire)
Slice off some butter into the bottom of the D.O.!
Dump in the first box of cake mix.
Mix up the milk(in liquid form) and pudding mix (the extra touch).
(You can just dump the ingredients in as the second layer)
Pour pudding over 1st cake mix. Cover pudding mix with #2 cake mix.
Throw hands fufls of Semi Sweet Chocolate chips and hands full of nuts. Slice off butter and place at strategic places around the top.
Cover with aluminum foil (for high heat) and cover with lid!
Cover entire D.O. with hot coals!
About 20-25 minutes, uncover and check cake.
If it needs a little longer, recover D.O. and place back on coals without covering the lid with hot coals.
I haven't made this for a while but it will satisfy the sweet tooth of any one from 2-90 years old!

You may tweak the receipe to fit your likes and the heat source you will be using.
Enjoy!
GregH