Cold quiche and salad. You can buy quiche bases ready made, or at least buy frozen pastry as you'll be making a lot. Put in filling and whipped up eggs, bake for 45 minutes, done. Make lots of different fillings so everyone has somethin they can eat (diced ham, goats cheese, onion, peppers, broccoli - go wild with combinations!) Make it all the day before then serve at ro temperature with a few big salads.