Preheat oven to 425. In a large pot, cook pieces of
cauliflower for 8 to 10 minutes. Drain and cool. Mix remaining ingredients in a large bowl reserving half of the cheese, chives and bacon for a topping. Add the cauliflower and mix well. pour into a 9x11 baking dish and add remaining cheese and bacon to the top. bake for 15to 20 minutes. add chives to top for garnish.