Stuffed pasta shells

Method

1. Preheat the oven to 190°C/fan170°C/gas 5. Finely chop the onion, carrot, celery stick and bacon. Spread out in a large roasting tin and drizzle over 1 tablespoon olive oil. Roast for 15 minutes.
2. Remove from the oven, spread the tomatoes out on top, cut-side-up. Press the chopped garlic pieces into the tomato flesh to submerge slightly, sprinkle with sugar, salt and pepper and dot with sun-dried tomato purée. Tuck in rosemary sprigs. Continue cooking for 1 hour, then turn the oven down to 150°C/ fan130°C/ gas 2.
3. Meanwhile, put a large frying pan over a medium-high heat and add 1 tablespoon olive oil. Season the stewing beef and brown on all sides in 2 or 3 batches. Add the beef to the tomatoes and pour in the red wine and beef stock. Stir, cover tightly with foil and return to the oven for 2½ hours or until the beef is tender.
4. Remove the rosemary stalks, and discard. Shred the meat with 2 forks and season to taste. Boil the giant dried pasta shells for 9 minutes. Drain and put in a 3-litre baking dish.
5. Stuff each shell with ragù and sprinkle with 25g grated Parmesan. Scatter with fresh basil leaves to serve.