Preheat the oven to 400 ° F
Combine sauce ingredients in a measuring cup and mix well until blended.
Cut off the outer leaves of the cauliflower and cut off the stem from the rest of the head, then place the cauliflower in a large ovenproof pan.
Pour this mixture over the cauliflower and rub it over the cauliflower with your fingertips until it is completely coated.
Cover and bake for about 35 minutes, or until tender.
Remove the lid, put the oven in the broiler and place the cauliflower under the broiler for 5 minutes, or until golden brown.
Carefully transfer the cooked cauliflower to a plate, garnish with pomegranate seeds, toasted pumpkin seeds and a handful of chopped fresh parsley. Serve immediately.