I'm going camping in a bit and have to make dinner for 8 hungry adults one night, but I only have a single propane burner (I don't want to get another one for just this one event, since im broke af)
They also don't allow campfires this time of year. I do have a huge cooler though, so that isn't an issue.
a fun thing i've done camping is just freeze a bunch of meals (like beef stroganoff) in individually wrapped tin foil. then just throw them on the coals to heat em up. easy camping meal.
Premade chili, or a thick lentil curry, will be your best bet if you're doing anything active on this camping trip. Cook it ahead of time, throw it in the cooler, and heat it up. You may want to add a grain if you don't want to do rice before or after on the same burner (minute rice will be easy though).
I personally love to dehydrate the above but that tends to be for backcountry canoe camping and hiking, where weight and volume matter a lot.
I camp cook a lot and have a few different setups for situations like this.
Build yourself a twig stove out of soup cans! Progresso or those other ready to eat cans fit a normal size soup cans in them and they rest on the inner lip so it suspends the inner can. Drill holes at in a pattern that does the same function as a solo stove. You can look up tutorials on it easily. Fashion a primitive grate from something from the hardware store and you have a second burner! Shouldn't cost more than $5 and it gives a nice rustic feel. You have to feed them twigs so flame control is a little annoying, but it's perfect for boiling water, which is exactly what you're going to want to do because pasta is your best friend when you're cooking for a group! Pre make your own pasta sauce and meat balls, sear them in the pan and dump the sauce in and let it all come up to temp. A little fresh parsley and parm on top and you're golden.
If you have a good quality plastic container with a tight lid you can use it to keep things warm while you cook a second thing. Like pasta with sauce, you toss the pasta plastic when it is done and quickly get the sauce done and then mix it through. Or a curry you do the same thing with the rice.
Bear creek soup mix is my favorite for a quick group meal. My go-to is the creamy potato soup then add a diced up ham steak, if you want it thicker bring some instant mashed potatoes to add too.
Chilli (1 pot) with pre-made cornbread, or Spaghetti (2 pots, one for noodles, other to warm up sauce). Bag of shredded cheese. Sprinkle with dried basil or oregano to get fancy. Ground turkey or tofu sub for meat.
If you have space in the cooler to spare, lean heavy on cold foods you can make ahead of time. Potato or pasta salad, sandwiches or wraps, tabbouleh are a few off the top of my head. Then whatever you have to heat up doesn't have to be the whole meal.