Try this tasty, low calorie version of an old favorite.
- Prepare the cauliflower, removing outside leaves and thick stalk
- Boil in salted water until tender
- Drain and arrange in a warmed heatproof dish
- Make the sauce, adding the mustard and three quarters of the grated cheese
- Pour the sauce over the cauliflower and sprinkle the remaining cheese on top
- Brown under a hot grill