Seconded securing a camp stove and cooler. Get a case of water bottles and freeze in advance of your trip. Now you have ice that becomes drinking water as you go.
Breakfast: Most people I've camped with find hot beverages *heavenly* and definitely worth waiting for on a cold morning (and most are when you are camping!). Once you have hot water, instant oatmeal is a great option (yes you can make regular oatmeal camping but it's far more mess and fuss when you really just want to eat quick and move on). Bagels+spread (jam, pb, butter, nutella, etc), cheese, yogurt if you have a cooler are all great options. Don't recommend bacon &eggs or pancakes (any real cooking) unless you're doing a slow morning.
Lunch: snacks. Trail mix, nuts, cheese, jerky, salami, dried fruit, fresh fruit (esp apples, citrus), fresh veg (carrots, peapods). If you're driving over lunch or coming back to camp, you can do something with hot water (e.g. ramen). Or gas station hot dogs.
Dinner: starch+meat/protein+veg. Mashed potatoes (instant for quick; real for more relaxed), rice, pasta, etc. Canned meat, hot dogs, brats/sausages, salami, summer sausage, beef jerky, beans or chili (I would go with canned but as others have pointed out you can prep at home and freeze). For vegetables, honestly most will keep esp in a cooler for the first 4 days or so, down to greens, tomatoes, etc though some may not like getting bumped around. We haven't necessarily brought all of these but I would consider bringing anything not misted/refrigerated at the store (e.g. onions, garlic, squashes, potatoes, yams) as well as any root veg (carrots, turnips/parsnips/rutabaga). If you'd like to be more hardy, you can go with canned/jarred like pasta sauce, tomatoes, peas, corn, etc. or if you can find them, dehydrated that you throw in with your starches (these might be more expensive and thus more applicable to backpacking instead, where carrying water that you can instead acquire at your destination would be silly). Finally, anything you do eat will be seasoned with fresh air and hunger so simple things actually taste surprisingly great outdoors :) Buttered pasta with hotdogs? Bring it.
Suggestion: pick a day to grill out, I would say out of days 5-7 (toward the end of your camping days) and pick up some meats from a local grocery for that. Also some grillable veg. And beers (or your poison of choice...if permitted or in blissful ignorance of regulations ;) ). It will be fantastic after 4-6 days of instant mashed potatoes. It'll be more time consuming than other options but one of the best things about camping.
Suggestion: instant soups, either Lipton packets, ramen cups, miso, or even 4-8 serving bags of dry mixes (there's one called Bear Mountain or something that I like), are quick options for when you get back to camp STARVING and freezing and lacking energy to make real dinner right away. They also take up next to no space so it's really not hard to have several in reserve just in case. They also keep forever and will be around for your next trip, or "I forgot my lunch" office food.
Don't forget: can opener, spices (you can bring spices camping!!), enough pans (it's handy to have a separate pan for each dish you are cooking that double as serving bowls), serving/cooking utensils (a big spoon, tongs, and/or a spatula may come in handy depending on your menu--it takes forever to ladle enough pasta with a tiny plastic spoon).
Have a fun trip!