In a large skillet, bring ¼ inch water and ½ teaspoon salt to a boil. Add cauliflower in an even layer, cover with lid, and steam for about 3 minutes, until slightly tender. Drain well. In a large bowl, combine cream cheese, sour cream, crushed red pepper, mustard seed, and garlic powder. Mix in half of the Gouda, then the cauliflower. Transfer mixture to an 8 x 12-inch baking dish. Sprinkle remaining Gouda on top. Preheat oven to 350 F. Bake covered for 30 minutes, then uncover and broil a few minutes to get a toasty golden top.
Per serving: 239 calories, 19 grams fat (11 grams saturated fat), 56 milligrams cholesterol, 470 milligrams sodium, 6 grams total carbohydrates, 2 grams fiber, 13 grams protein.