Heat a saucepan over medium heat. Add the oil, onion and garlic and cook, stirring occasionally, for 8 minutes or until soft and golden. Add the tomatoes and crush with a fork. Add the wine and stock and simmer for 10 minutes or until thickened slightly.
Add the prawns and cook for 5 minutes or until they have turned red. Add the parsley, salt and pepper. Spoon into bowls. Serve with crusty bread. Serves 4.