Put the rice in a fine mesh sieve and run under cold until the water runs clear, set aside.
Heat a splash of oil in a wide oven proof casserole pan, sauté onions and celery for 7 minutes until soft. stir in garlic, cook for a couple of minutes then add chilli, tomato purée and chopped tomatoes.
Add the rice and stir to combine, add the salt to taste to the stock and pour over the rice, don't stir. Put a lid on or tightly seal with foil and bake for 25 minutes. Remove from the heat and leave to stand whilst still covered for 10 minutes.
Remove the cover, fork through the dish, sprinkle with sardines and finish with torn basil leaves.