Cauliflower Cheese.

Place your cauliflower (cut up if not using baby caulis) in a pan of salted boiling water and cook for 10-15 mins or until just tender - be careful not to over cook as it will be cooked for a second time in the oven.
Melt a good knob of butter in a saucepan and remove from the heat.
Stir in plain flour and add a little milk and return to the heat adding more milk a little at a time, constantly stirring.
When the sauce has thickened add cheese - I used Lincolnshire Poacher but any good quality English hard / cheddar like cheese will suffice.
Remove from the heat and keep stirring until the cheese has melted, then stir in a teaspoon or two of mustard and a grating of nutmeg.
Place your cauliflower in to an oven proof dish and pour the sauce over and place in an oven at 180 degrees for twenty minutes or so.
You can also place under the grill for a further five mins to give it more colour if you wish.