This is one of my favorite ways to prepare greens. The combination of three types of greens makes the flavors more interesting, the caramelized onions add a sweet note, and the feta really jazzes things up. It's also pretty darn easy other than cutting up all the greens, which can be a little time consuming. This is great for a holiday meal or everyday.
Bitter Greens with Sweet Onions and Feta Cheese (from The Vegetable Dishes I Can't Live Without by Mollie Katzen)
2 T extra-virgin olive oil
3 cups sliced onions (sweet onions, if possible)
3 large bunches fresh greens, stemmed if necessary, coarsely chopped (I like to use mustard greens, chard, and kale)
Salt, to taste
Up to 1 cup feta cheese
Freshly ground black pepper, to taste
1. Place a large, deep skillet or Dutch oven over medium heat. After about a minute, add the olive oil and swirl to coat the pan. Add the onions and saute over high heat for about five minutes. Reduce the heat to medium, cover the pan, and let the onions cook until very tender, about ten more minutes (stirring occasionally).
2. Add the greens in batches, sprinkling lightly with salt after every other addition. Turn the greens with tongs or a rubber spatula as you go, bringing up the wilted greens from the bottom.
3. When all the greens have wilted, stir in the cheese and cook for about two minutes longer.
4. Transfer to a platter and grind black pepper over. Serve hot.