We have been making our version of Hobo Stew for a couple summers now. We have found the best technique is to put a large square of foil on a paper plate holder. Stack them to make the foil form into the plate holder. Spray the foil with cooking spray.
It has worked best for us to have a potato type item on the bottom. We have used shredded hashbrowns from the refridgerated section or canned sliced or diced potatoes.
Then we have an assortment of meat and veggies, plus spices.
I usually cut the steak into small strips. The younger kids like ground beef. If using chicken, I get the already cooked packaged chicken (Tyson) because then I know it will be cooked and it stores in the camper well until ready to use.
Veggies can be the mixed frozen variety, canned mushrooms, or for an asian flair - water chestnuts, baby corns, and oriental veggie mix.
Some sort of liquid is needed. We have tried steak sauce, a small pat of butter, beef broth, or soy sauce. Then season to taste with cajun seasoning, garlic pepper, lemon pepper, montreal steak seasoning, etc.
Finally we wrap up the packets. Using a popsicle stick or flat food pick, write your initials on the stick and wrap it into a second layer of foil so it sticks out to id your packet. This allows for the different level of doneness.
We have a tripod that goes over the campfire coals. We can usually get 6 packets on the swing and can raise and lower the rack depending on the heat of the coals and the weather. 45 minutes is usually a good time.
Nothing tastes better.