MORE: Do You Have A Cold…Or The Flu? This veggie is as potent as it is versatile: After giving it a rinse and dry, serve spinach raw in a salad, sautéed in olive oil, pureed pesto-style, or simply steamed. You can even add it to a smoothie—the flavor is so mild, you won’t even taste it. The veggies, whole grains, and walnuts make this salad a seriously superfood-packed meal. But you’ll really love the maple-mustard vinaigrette, which plays off the spinach and beets’ subtle sweetness.