N.H.
Can't help you with the camp cake, but my suggestion is to take things that are easy to prepare (less than 3 ingredients) or are pre-made/pre-mixed. I also have a camping kit I put together at Walmart-basic spices, pots, pans, plastic dishes, cheap utensils, can opener, spatulas, paper towels, cleaning supplies (for dishes), trash bags, & a cleaning tub for dishes.
As for recipies, carne asada or fajitas are good if you mix everything at home, once cooked, just throw it in a tortilla & cook up a can of beans.
I also take instant mashed potatoes & a can of green beans or corn to go with steak or chicken.
For breakfast look into the instapour pancakes with eggs & bacon. We also do chorizo & eggs with a side of potatoes.
For lunch, you can keep it simple & do sandwiches or hotdogs.
I really try to not let camping get in the way of food options.
Good luck & I hope you have lots of fun!
Oh & my recommendation for camping (from your last thread) is Carpinteria State Beach (just south of Santa Barbra), it's right on the beach, but in a small town so it feel like you're getting away.