Cut up the cauliflower into small pieces and cook in boiling salted water until it's barely soft, then drain and mash the cauliflower, leaving some chunks. (I mash it a few times in the colander and then transfer to a bowl and mash a bit more.)
I know that bacon isn't recommended for the South Beach Diet, but I do use it occasionally in small amounts. This recipe called for 8 pieces, which I cut down to six. I buy the pre-cooked bacon at Costco, and cook it so it's very crisp, then blot well with paper towels, so I get rid of as much of the fat as I can. I think Canadian Bacon would taste great in this if you don't want to use bacon, and it would also be fine with no bacon at all.
Combine the mashed cauliflower, light cream cheese, light sour cream, green onion, Parmesan, and 3/4 of the crumbled bacon.
Put the mixture into a glass casserole dish with a lid that you've sprayed with olive oil or non-stick spray, and top with the low-fat sharp cheddar and the rest of the bacon.
Bake with the lid on at 350F/180C until the mixture is bubbling and all the cheese has melted, about 30-35 minutes. (I take the lid off for the last 5-10 minutes to brown the top a little.
And here's the photo from 2008 when I first updated this recipe with a photo (and obviously I was a lot more into the macro photography look in those days!)
Twice Baked Cauliflower
(Makes 6-8 servings; recipe adapted slightly from The Low Carb Gourmet.)
1 large head cauliflower
4 oz. low fat cream cheese (do not use fat free)
1/2 cup low fat sour cream (do not use fat free)
1/4 cup minced green onions
1/4 cup freshly grated Parmesan cheese (If you only have finely grated Parmesan, use a bit less)
6 slices bacon, cooked until very crisp, fat blotted with paper towel and then crumbled
1 cup reduced fat sharp cheddar cheese
(I used Kraft 2% milk sharp cheddar)
Preheat oven to 350F/180C. Cut out stem and core from cauliflower, and cut into small pieces. Cook in large pot of boiling salted water until cauliflower is tender, but not overly soft. Drain well and mash with potato masher, leaving some chunks. Mix in light cream cheese, light sour cream, green onion, Parmesan, and 3/4 of the crumbled bacon.
Spread evenly in a medium-sized glass casserole dish. Sprinkle with low-fat cheddar cheese and reserved bacon. Bake 30-35 minutes, or until hot and bubbly.