Having a caravan gives us the ability to take heaps of cooking stuff. We were looking in the Vogue caravan (which we'll still buy if money goes right, but it ain't just yet) and it's got even more cupboard space, so the wife's going "I can put the slow cooker in here ... this there ... something else up there ...
At the moment the caravan has a 2-burner stove with a grill and it does a respectable job. It has a microwave for when we're on mains power or I pull out the genny. We also bring a grill that we picked up from K-Mart for $18 - drive the metal stake into the ground beside the campfire, mount the grill on it and swing the food over. Awesome, we cook steak, snags, bacon and lots of stuff in those foil baking containers with the foiled paper lids - my fav is campfire potatoes - sliced onions, carrots, potatoes and bacon with Worcestershire sauce, chicken stock and topped with cheese ... dammit, I'm hungry now.
This evening, we're pulling the Jackeroo oven out. Picked that up from K-Mart as well (no, I'm not a walking bloody advertisement for the store, it's just coincidence). Gas powered, it has two burners up top and it's a bloody neat little oven - chicken kiev is on the menu for tonight. Not sure if we'll do a garlic bread as well.
We sometimes bring a little charcoal BBQ along as well. We bought (from Big W - not K-Mart) one of those charcoal chimney things. Fill it with heat beads, put a couple of those firestarter matches (the really big thick ones soaked in paraffin or whatever it is) and away it goes, ready in about 30 mins and absolutely blazing hot. Only problem with the charcoal BBQ is turning it off when you're finished. If we're camped away from civilisation, we don't like wasting water on it, so it has to sit away from plants etc for quite some time while the heat beads burn out and the thing cools off.
We did buy one of those cast iron dutch oven things that you put the food in and bury in the campfire, but haven't bothered to try using it yet. I think it's probably going to rust away on us before we bother with it too, we eat pretty well normally and don't always stay in one place long enough - we really, really enjoy the journey between points and seeing things along the way, so having gear to cook a meal quickly that's easy to clean and pack away makes things much easier for us.