Always, always a spag bol for the first night. Frozen chilli/stew for day 2. Do you have electric? If so, boil kettle for water for rice/pasta rather than on the hob,otherwise fresh pasta is good for a couple of days (and cooks quickly) and pre-cooked rice.
As pp said, eggs, bacon, chorizo don't really need to be kept in a fridge. Tinned hot dog sausages/tuna plus a jar of pasta bake sauce plus pasta = filling tea.
Tinned Bacon grill is actually not a bad substitute for the real stuff (we call it camping bacon).
Tinned potatoes, sliced, a few bits of pepper plus eggs = tortilla.
Baked camembert (heated through the best way you can) plus a couple of baguettes to dip, sliced salami, olives, bag of fancy salad = posh dippy cheese tea
Long life milk we've never got on with so we steer away from anything requiring milk.
Fried rice - pre-cooked rice to save faff, time and gas, tinned mixed veg, sliced cooked meat (fresh eg sliced chicken/ham or tinned ham/salami etc) chuck an egg in, splash of soy sauce
Fresh noodles as above using pre-cooked meat, veg pack and sauce
Mmmmmm I want to go camping now...