All year long I've been on a campaign to eat more kale. You can tell by my use of the word campaign that kale is a vegetable I'm learning to love, not one I loved from the start. Like most kids I know, I don't always want to eat my dark leafy greens, so from time to time I have to hide vegetables in my own meals. This mildly spicy red pepper, kale and walnut dip -- which you also could use as a spread on sandwiches or bruschetta -- began as a random ingredient pull from the refrigerator. I had some kale that needed to be used, a bit of leftover roasted red pepper in a jar, and a few walnuts. Harissa brought them all together in a Mediterranean-inspired dip, and nobody will ever figure out that kale is the green in it. Serve this at your next party, with celery sticks, carrots, or tortilla chips.