I do chicken breasts in the oven, boil some new potatoes and then put them in the oven sprayed with frylight to roast. I have tons of veg - carrots, peas, broccoli and maybe syn a yorkie pud. Gravy is another couple of syns.
TBH we don't have a Sunday roast, but we have a cooked dinner one evening a week and this is why we have!