Spaghettini allassassina

Name: Spaghettini all’assassina
Ingredients: 200g/7 oz passata; 1 tbsp red pepper paste (or tomato purée); 200g/7 oz spaghettini; 50ml/2 fl oz olive oil, plus extra to drizzle; 3 garlic cloves, crushed; 2 red chillies, finely chopped; 2 tsp dried chilli flakes; 10 cherry tomatoes (optional); salt and freshly ground black pepper