Spicy pasta soup

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1. 1
   Heat the oil in a large heavy-based saucepan. Add the onion and chilli, then cook for 10 mins until softened. Stir in the tomatoes, breaking up with a spoon as you go, then pour in the stock. Cover, bring to the boil, remove the lid, then simmer for 5 mins.
2. 2
   Add the spaghetti, then simmer for 6-8 mins until it is just cooked. Stir in the olives, capers and basil or pesto, then serve drizzled with olive oil.