"This homey pasta dish uses pancetta (Italian bacon) in the tomato sauce, but for vegetarians it can be easily omitted. The collards and Parmesan elevate the calcium count to rival a cup of milk...."
INGREDIENTS
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1 pound collard greens, (about 12 cups), stripped from thick stems, washed, dried and coarsely chopped (1/2-inch pieces)
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2 ounces sliced pancetta, or bacon, finely diced (3/4 cup)
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2 teaspoons extra-virgin olive oil
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1 medium onion, chopped
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2 cloves garlic, minced
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1/8 teaspoon crushed red pepper
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1 28-ounce can diced tomatoes, (not drained)
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1/4 cup water
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8 ounces medium pasta shells, (3 cups)
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1/4 teaspoon salt
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Freshly ground pepper, to taste
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1/2 cup freshly grated Parmigiano-Reggiano cheese