There aren't really any specific directions for these - you can pretty much make them however you would like. We sliced the vegetables and shaped the ground beef (which can be seasoned to your liking) into patties. We then wrapped a patty and veggies in 2 layers of aluminum foil, which was sprayed with cooking spray, and cooked them in the oven (400 degrees) until the vegetables were tender and the meat was done, which took about 50 minutes. Each dinner had its own aluminum foil wrapper.
Notes: These, of course, are also great when cooked in the hot coals of a campfire. Make sure tinfoil is wrapped tightly and any openings are on the top, as juices will leak out during cooking otherwise. I like to top mine with barbecue sauce.