It seems like most seem to go simple on the meals, even a cold one at times. It does not take much more effort to cook a nice meal on a campfire or campstove, nor does it take much more room.
The time you spend cooking passes more of the long night from dark till bed and it fills you up and makes you sleepy. I have made everything from fried fish to redbeans in rice in a single skillet, turned around and cooked a good breakfast over the coals from the night before with bacon and eggs. You can vacuum pak a good cut of meat and freeze it, it will thaw in the cooler on a days float. Wrap a tater in foil and place it in the fire while you grill a steak. Pre cook some sausage at home and vac pak, add it to chili beans or Zatarains Red Beans and Rice mix in a skillet for a good cold night meal.
That little extra starts you off good for the next day too. Lots of good warm carbs keeps you cozy and comfy on trips like those. Cold sandwiches and poptarts are like kissing your sister, just not quite the same as the real stuff. Campground cooking is the best part of the trip.