I've become very fond of pasta as a great way to cook a proper meal quickly. When I'm feeling organised at the weekends I try to cook in bulk and freeze most of it for eating during the week. There aren't any exact quantities given, because I tend to make these up as I go along.
This involves a large baking tray, lots of fairly roughly chopped vegetables (peppers, tomatoes, green beans, sweetcorn), pasta, bacon (chopped) and some lentils thrown in for good measure. Mustard,tomato puree and worcestershire sauce added for flavour. Then cover with the jar of pasta sauce adding enough water that everything's well covered. Takes about an hour to cook. I generally remove it when it's nearly cooked and add some grated cheese (cheddar, parmesan) before putting it back in to finish off.
Very easy - chop an onion and some garlic and fry them together, till the onion is half cooked, add in mince then once the mince is browned a tin of tomatoes. I generally add some mustard and worcestershire sauce to this too. If you want a more vegetable intensive mixture chop and add the veg at the same time as the meat (again, I've used peppers, green beans, sweetcorn, broccoli with this). Be creative. The only constraint is the size of one's frying pan!