I do a lot of stirfries when I'm in a hurry - I cook the onions while I'm slicing the other veg and the meat (if I include meat), then toss in the meat while I microwave any 'harder' veg (carrots, cauliflower) so that they go in to the pan hot and don't take so long to cook. Then a packet of noodles (the soft ones) and a splash of sauces and water toi thin the sauce a bit, in whatever combination I fancy - oyster, hoisin, teriyaki, sweet chili, plum, soy - and it's done, from start to finish in about 20 minutes.

Also pasta with stir-in sauces such as pesto, with steamed/microwaved veg on the side

And I love a recent idea I got from someone here - I called it egg noodles, but it's basically grated lightly cooked veg and cooked noodles, in an omelet.

For quick lunches, hummous makes a great little spread or dip, and I find it freezes fine, too.