Stir fry is good- buy a mix of veggies, noodles, meat and straight to wok sauce, fry off the meat then veggies add the sauce and then add the noodles which you should of already boiled mix it all up and et voila.
The secret is to cut up everything tiny beforehand, timing is everything- meat takes 2 minutes, veggies 1 and sauce 1.
Another good one is tom soup- fry off tiny cut onion add a can of chopped toms & oregano, simmer for as long as needed (it'll be done when it all looks like one big slop), put through a blender and eat. You can buy little bottles of balsamic vinegar for dead cheap and makes tom soup taste awesome.
Chile is another good one- chop up onion and pepper dead tiny, fry off some mince with an oxo cube, add the veggies and fry for a little longer, then add tin toms and some red wine if your feeling flush along with chilli powder, simmer on a really low heat for about 30 minutes till its reduced, leave to cool and eat- you can make enough for four and leave it in the freezer for some quick suppers, and it gets better the longer you leave it. You can also add some green if your that way inclined.
Ideally you want to eat fish and red meat once a week and as much green leafy vegetables as you can- according to student health surveys iron deficiency amongst us is really common and can lead to lethargy, shortened attention spans and all sorts of other stuff.