Porcini mushroom, tomato & rosemary pasta - Good Food Middle East

Ingredients

• 20g dried porcini mushrooms
• 3 tbsp olive oil
• 1 onion , finely chopped
• 2 large sprigs of rosemary , leaves picked and finely chopped
• 1 tsp chilli flakes
• 2 x 400g cans chopped tomatoes
• 400g rigatoni
• 30g parmesan , finely grated