When you go car camping, you can take more and heavier stuff, which usually means you’re going to eat better. Start by looking over Camp Kitchen Basics to learn about organizing your food and gathering your gear.
You might want to bring a Patrol Box. Troop patrol boxes are micro kitchens, with all the stuff you need to prep, cook, and clean up after great campground meals.
A particularly interesting tool is the Dutch Oven, which provides a way to simmer stews and bake cobblers and rolls using only charcoal briquettes.