This has to be one of the easiest things to chuck together, but it's tasty and relatively good for you. Boil penne and cauliflower florets in salted water for about 9 minutes. Mix 2 tins of chopped tomatoes with some squished garlic, salt and plenty of black pepper (you could cook this first, you could add other veg etc to make a more complex sauce, and/or chili to heat it up a bit, but this works). Tip meatballs, drained pasta and cauliflower into oven proof dish, stir in tomato sauce. Grate cheese on top. In the oven for 20-30 minutes. Scoff. I wasn't sure if victim would like this, and we have been a bit pasta'd out recently - but the declaration was "tasty!".