Method

1. Finely dice onions and sweat in a saucepan with a little oil until soft but not coloured
2. Add garlic puree and cook for another minute before adding chopped tomatoes
3. Cook for an hour until thickened then season with salt
4. Cook spaghetti in boiling water for 12-14 minutes until tender
5. Pan fry prawns in a little oil until hot before adding the tomato sauce
6. Serve prawn sauce on spaghetti and top with torn basil