INGREDIENTS
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1 bunch kale or collard greens
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1 tablespoon olive oil
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8 ounces kielbasa or fresh Italian sausage (mild or spicy), thinly sliced crosswise
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1 large leek (white and light green part only) or 1 bunch green onions, sliced
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1 (15-ounce) can white beans, such as cannellini or navy beans, rinsed and drained
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3 cups reduced-sodium chicken broth
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1/2 teaspoon coarse salt
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Freshly ground black pepper
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1 to 2 ounces freshly grated Parmigiano Reggiano cheese