Cauliflower can be prepared in many ways, including roasted, boiled, sautéed, and mashed. To prepare cauliflower, remove the outer leaves, trim the stem, and cut the head into florets. To boil or steam, place the florets in a pot and cook until tender, approximately 5-10 minutes. To roast, toss the florets with oil, salt, and pepper, and bake in the oven for 20-25 minutes at 400°F. Sautéing cauliflower involves heating oil in a pan and cooking the florets until they are lightly browned. To make mashed cauliflower, steam the florets, then blend in a food processor with butter and milk until smooth. Cauliflower can also be used as a substitute for rice or as a low-carb pizza crust.