Wash the cauliflower (let's start with the obvious, shall we?).

If you want to obtain the most visually pleasing result (picky!), and use extra equipment you will need to clean after, steam (or boil) the cauliflowers until cooked but not totally tender: make sure you can stick a fork into the caulifower without it breaking into pieces. In the meanwhile, cut the onion in slices and put them in a deep pan, either just with water (the no fat option) or with a table spoon of olive oil (the low fat option) first and then, when the onions have taken some colour. a third of a cup of water.

If you go the one pan option(lazy!), put the flowerets into a deep pan and cover with water. When the cauliflowers are almost tender, add the sliced onion in the pan and cook until both vegetables are cooked and the water has almost totally evaporated. This way the flowerets have more chances of crumbling: the taste will not change but the end result will be less aesthetically pleasing. But hey! In the end you will only have one pan to clean!

At this point, add to the vegetable mixture, which should still have some water in, the tomato sauce (or crushed tomatoes), salt and pepper and the sliced olives and capers.

Finally, let cool a bit and eat, while still hot but not steaming! Enjoy!!!

The sweet taste of the onion cooked in water matches welll with the caulifower and with this dish you can stuff yourself up withtou guitly feelings!
Personally, I don't like to add much more spices to the mixture since the olives and capers are already providing with the necessary flavouring for the bland cauliflower and the rather sweet onion, but you can add some hot pepper if you like.

Also, adding a bit more water to the tomato sauce, you can cook in the sauce some fish (like cod or seafood) or lean meatball, for a complete, stuffing meal: indeed this recipe was copied by my mother's original recipe for squids!

The nutrional values (for the no fat version) are as follows: calories=280 , carbs=45 , fat=11 (they all come from the olives: reduce their number for a leaner dish), protein= 11.