The tangy sauce that blankets the cauliflower is to die for!

1 head Cauliflower, whole
1/2 cup Mayonnaise
2 teaspoons Mustard or Dijon Mustard
3/4 cup Cheddar Cheese, grated

Remove leaves and some of the core of the cauliflower but leaving it intact.
Cook cauliflower in a few Tablespoons of water in a covered casserole dish on HIGH in the microwave for about 8 minutes.
(Conversely, you can also steam the whole head on the stovetop, if you prefer)
Drain and let sit, covered for a few minutes.
While cauliflower is sitting, in a large pyrex measuring cup combine the mayo and mustard.
Microwave for a minute.
Frost the surface of the cauliflower with the mayo mixture, sprinkle with grated cheese.
Return to the microwave and cook just until the cheese melts, 1 – 2 minutes.