We like to cook over the open fire and have a large grate that can go over the campfire and we grill all types of meat (steak, chicken, pork chops), but this isn't for everyone.
We have a coleman roadtrip party grill (sells for about $40-45). It's fabulous and we couldn't live without it. It's only about 12" in diameter. The top grill part comes off and underneath in a stovetop burner. We grill chicken breast, hamburgers and sausage patties, and veggies.
For a hot breakfast, we use an iron skillet on the burner and cook bacon, then scramble some eggs, then use the same pan to make the homefries (see below for potato tip).
When you have a campfire at night, wrap up some potatos in heavy duty foil, give them a few pokes and place them down near the coals out of the direct flame. In the morning you can cut them up and make some home fries. Or you can reheat them the next night and have a baked potato with your meal.
I always bring along some hard boiled eggs, good for breakfast or lunch - sometimes I'll make them into an egg salad.
I always bring along cut up veggies (carrots, celery sticks, cucumbers) and some dip, makes an easy side dish or a snack. My daughter loves green beans, so I cook them at home, keeping them nice and crunchy and just add some seasoning - no butter, and she'll eat them cold.
When camping with electrical hookup, my girlfriend brings along the crock pot. She'll put the food in the pot in the morning, spend the day doing activities and can enjoy a hot meal at the day's end. This is a good way to heat up a stew or some chilli you may have prepared in advance.
Taco's are a kid's favorite. We use the flour tortilla shells, rather than the traditional hard shells. I cook the meat ahead of time at home and just heat it up. Bring along your favorite toppings.
One of our favorites is grilled boneless chicken breast. One of my tricks is to marinate it, then freeze it (double the ziplock bag, just in case). I bring it along frozen in the cooler, it slowly defrosts over two to four days, depending on the cooler quality, etc. Then it ready to go directly on the grill.
Bringing along some cooked grilled chicken breast is also a good idea. Makes a great sandwich. Cut it up and toss it in with a veggie salad or pasta salad.
Sometimes I make a quiche in advance and bring it along - great for breakfast or lunch.
Happy camping!