Want to see what this recipe costs at different supermarkets? Compare in one place here:
Put all the ingredients in a large pan with 1 tsp salt and 500ml water, then heat until boiling and the butter has melted.
Stir, cover and leave to simmer for 6 mins. Take off the heat and leave, still covered, for 5 mins. Fluff up and tip into a warm bowl to serve.