Preheat oven to 150C/ 300F/ GM2 and line a baking tin with parchment
Cut the tomatoes in half, toss in the oil and season with salt and pepper. Lay face up on the tray and roast for 1 hour
When the tomatoes are almost ready, bring a large pan of salted water to the boil and cook the pasta according to the instruction on the pack - aim for al dente
Meanwhile, finely chop the rocket and rip the cheese into small pieces
When cooked, drain the pasta. Stir through the sauce, followed by the rocket and finally the tomatoes
Divide between 4 plates and scatter the mozzarella over the top.
Garnish with a little extra chopped rocket and serve immediately, with a little shave pecorino or parmesan if desired