Trader Joe's Organic Riced Cauliflower I use Trader Joe's Frozen Riced Cauliflower as a low-cal substitute for rice or oatmeal, but I also use it in soups, mashed potatoes, and even smoothies. One 12-ounce package has 90 calories and offers six grams each of fibre and protein. Image Source: POPSUGAR Photography / Jenny Sugar