My kitchen during the build has been a 2 burner camping stove with small grill. Getting through the summer holidays using this for all family meals has tested my mettle. I find myself in Asda (we're budgeting!) frozen food aisle scrutinizing the back of food packets to see not whether there are E numbers but whether you can either a) microwave it, b) grill it or c) boil it. If I can, it's straight in the basket.
I've found microwavable pancakes (IKEA) - actually taste much better than you'd think, and grillable chips though I wouldn't actually recommend doing these on a camping grill. The chips took 40 minutes after which time I'd had enough, and decided that the translucent, glistening, hard-in-the-middle things lying flacid in the grill pan were ready, and surfed up the same to the kids for tea. They didn't eat them. Fish-fingers are a good option, but on my grill they take 20 minutes (each side). bit painful. Due to the limitation of the equipment, some meals I've served up to my children have taken on a colour theme: orange (fishfingers & beans) : yellow (chicken goujons & sweetcorn). Wraps are increasingly popular for lunch with whatever filling i can find in the fridge. I put the picnic blanket down on the floor (too dusty otherwise), stick some crisps and apple on the plate, call it a picnic and the kids love it.
My kitchen is due to be installed in a weeks time. Not sure how i'll cope with a range cooker after the last 3 months bending over my stove.