2 garlic cloves, thinly sliced
1 onion, finely chopped
50g/1¾oz baby spinach
900ml/1½ pints fresh chicken stock
½–1 tsp dried chilli flakes
1 tbsp olive oil
salt
20g/¾oz grated Parmesan
250g/9oz pack sausage tortellini or other tortellini of your choice