Roast cauliflower tossed in oil and salted and peppered to taste at 400° for about 20 minutes or until lightly browned.
Add all remaining ingredients except 1/4 cup aged white cheddar and chives to a blender or food processor and puree until smooth.
Bake in a small baking dish at 350° for 20-30 minutes.
Add 1/4 cup cheddar to the top and set under the broiler for 5-10 minutes until cheese is golden brown and bubbly. Watch carefully so it does not burn!
Garnish with chives.