Sometimes – oftentimes! – all a dish needs alongside it is some roasted new potatoes. This is the side for the job.
Getting ahead: Take this up to the point before the potatoes are ready to go into the oven, if you want to get ahead of yourself: the potatoes and tomatoes can sit around on the tray for a couple of hours. Don’t put them into the oven ahead of time, though: they want to be eaten freshly roasted.