Spinach Salad with Oranges & Roasted Beets

Plump, sweet navel oranges are featured frequently in winter salads. They lend appealing color and zing to this mix of beets and spinach, adding even more vitamin C and antioxidants to an already healthful mix. Garnet-fleshed blood oranges, at their peak of flavor in winter, can be used in place of the navel oranges. Add some protein with a sprinkling of toasted walnuts or almonds if you like.