2 tbsp fresh basil, torn
1 garlic clove, finely chopped
1 onion, chopped
400g tin chopped tomatoes
400g/14oz penne
salt and freshly ground black pepper
2 tbsp olive oil, plus a dash
pinch oregano
1–2 tbsp tomato purée
50ml/2fl oz double creamÌý
100g/3½oz grated Parmesan or vegetarian alternative