1.Heat oil in a large saucepan over medium heat; cook onion, celery, carrot, garlic, oregano and chilli, stirring, 8 minutes or until vegetables are just tender.
2.Add the boiling water and stock to the pan; bring to the boil. Add pasta, reduce heat; simmer, uncovered, stirring occasionally, 12 minutes or until pasta is tender. Stir in parsley.
3.Divide spinach between bowls; ladle soup over the top.