SPH came up with this recipe during his ultra-low carb kick. I think it is a pretty popular concept, using cauliflower instead of potatoes to have a mashed side. We continue to use this side dish since it is easier (no peeling!) and healthier than potatoes.
1 medium sized cauliflower head, cut into a large pieces
1-2 garlic cloves
1/4 + c light sour cream
1/4 + c skim milk
1/2 t salt
1/4 t ground pepper
2 T parmesan cheese
Steam the cauliflower and garlic for about 10 minutes or until the cauliflower is very tender. Place in a food processor and begin to puree. Add 1/4 cup sour cream and milk, salt, pepper and parmesan cheese and continue to puree until smooth. Depending on the size of your cauliflower, you may need to add more sour cream or milk.