With an earthy flavor that gets supersweet when cooked, beets are very nutritious: 1⁄2 cup of cooked beets has just 29 calories but boasts 2 grams of fiber and provides 19 percent of the daily value for folate, a B vitamin needed for the growth of healthy new cells. Plus their beautiful color comes from betanin, a phytochemical that’s thought to bolster immunity. Roast them, pickle them or shred them raw and dress them with citrus for a refreshing salad in these 4 quick and easy beet recipes.