Spinach is my all-time favorite dark leafy green. I particularly love it this way - softly wilted in a pan of sautéed onions and butter and then tossed with a rich white sauce made with chicken broth, a bit of heavy cream and spiced with a wee bit of nutmeg. It's heavenly, as is, but if you have pine nuts for the toasting ? Oh my, they are a nice addition to the dish.