You could probably use the quart bags. They normally serve beef stew, cornbread, and some sort of cobbler plus water or gatorade. We always use GSI bowls since we use the turkey bags to rehydrate then serve in bowls. They have wash, sanitize, and rinse tanks set-up for you to clean bowls before and after the meal if you decide to go that route. If you could find bags with a flat bottom, you could probably make that work. You proceed through a line of very hunger campers where everything will be placed in the bag. You may get seconds.
Hope this helps.