The block of polenta - I would slice it into 5-10mm thick slices, and 'fry', grill or ideally griddle (to make stripes) and then top a couple of slices with either creamy mushrooms (obviously using vlf products!!) or a bolognese style tomato sauce. Also good with parmesan if you have a HE available.
I love gnocci - (it has syns though!) - either as a side dish (like you would potato) with a pork chop and veg etc ... or even better is to make it as a 'bake' - heat it through in boiling water, cook some broc/sweetcorn etc, then mix everything together with a tomato or cheese style sauce. Bake in the oven and serve with a salad - very filling!