Place the cauliflower florets in a large bowl. Cover the bowl with plastic wrap and microwave for 10 minutes on high, or until the florets are soft and tender.
Mash the florets with a potato masher. Add the remaining ingredients. Mash and mix to your desired consistency.
Spoon the mixture into a 1½ quart baking dish which has been sprayed with cooking spray.
Bake in a preheated oven for 20-25 minutes. Serve hot.