Remove all leaves from cauliflower and place in a baking dish.
Using gloves (if preferred), rub the minced garlic all over the cauliflower, followed by the mustard.
Sprinkle with seasoning and the grated cheese and bake in the oven for 60 minutes if preferred some crunch or up to 1 hour 30 minutes for softer, while monitoring the cheese.
Remove from oven and sprinkle with lemon and fresh parsley.