This is pure thread drift here because I rarely build a fire and rarely cook on one - I almost always use a pocket rocket, alcohol stove, or may use my whisperlite in winter. I do know how to cook on a fire though and this used to be one of my favorite things to do - - more a "camping" thing but when you can pull it off in the backcountry, it's pretty cool:
Carrot Cake: Divide food ingredients among a few backpackers (party of 3 or more) - plan on eating in the first couple of days to save weight
The first thing you need is a Banks Fry Bake - this is pretty much a lightweight iron skillet with a lid. Here is a link:
www.frybake.com
this sounds crazy, but go ahead and get the 10" one - you can cook amazing things in it. It's certainly not a tool for
a thru-hiker but can be a legitimate luxury item in a more or less light weekend (or even week long) pack
Other ingredients:
Cooking Oil: I suggest filling a small water bottle
Carrot Cake Mix (from the grocery store)
Powdered milk packet (optional depending on mix)
Skip mixes that require egg or just skip the egg - it'll be fine
Raisins or Cran-Raisins or Chocolate Chips (or both)
Cream Cheese Frosting - yep, just toss the whole can in your pack
Build a nice campfire and get down to a nice bed of glowing coals.
Make the cake mix in your cookpot with water and powdered milk and a little oil
Add raisins or chocolate chips
Grease the fry bake really good with oil and add the mix
Set the pan down into the coals and place the top on it tightly, Shovel hot coals on top of the lid with a couple of sticks
The cake will probably need to cook about 30-40 minutes depending on the heat of the coals - don't worry, it is cooking
Usually, when we've done this, by the time we've eaten dinner, made a fire and baked the cake, everyone is asleep so
what I've done is set the cooled cake aside with some rocks on top of the pan to protect from animals and let it sit till morning.
Empty the cake onto the lid, frost, and eat - - it's a really great trick - - especially backpacking with kids.