Preheat oven to 450. Cut the cauliflower into bite sized pieces and put on a parchment lined baking sheet. Roast at 450 for 20 minutes.
Meanwhile make the sauce. Heat the milk, cream cheese and 1/2 of the asiago on medium heat. Simmer until cheese melts and sauce thickens. Add all herbs and turmeric to the pan. put on lowest heat until cauliflower finishes roasting. Keep oven on.
Take cauliflower out of oven and mix it into the saucepan with the sauce, stir well to coat. Spray a thin layer of oil into a square (8") baking dish or similar sized oval gratin dish. Put the cauliflower mixture into it. Sprinkle the remainder of the asiago and the parmesan on top. Bake at 450 until well browned and bubbly, about 25 minutes.
This is an amazing side dish served with baked herb roasted chicken.