Pour into a slow cooker pot. Set aside 1 sliced spring onion for ... Cover with a lid and cook on high for 4–5 hours, or until the vegetables are tender and the sauce has thickened.
Cover and cook on High for 3½–4 hours or Low for 5–7 hours, until the vegetables are just tender ... blitz to a purée then return to the slow cooker pot and mix thoroughly to thicken ...