I'm not a vego but I've had a few vego dishes. You can make a nepalese curry (heaps on google). Or cook a stir-fry with tofu instead of meat (if you pour soy into it, the tofu will suck in the flavour, it's very nice and good if you think tofu tastes like shit). Be warned that some tofu can actually be very high in fact and salt. Seriously though, froz vegetables are probably the go, and if that's too much effort, here they sell them in sealed bags that take like 2 mins to cook and serve. Potatoes, you can keep these for a while if store them in a dark place, and if you keep them in a small cane bin lined with newspaper or paper towel it also keeps them for a few weeks. It's easy mate, dead easy.
