6 tablespoons (3/4 stick) butter |
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8 ounces pancetta, cut into 1/4-inch dice |
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2 large onions, finely chopped |
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2 carrots, peeled and finely chopped |
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3 celery stalks, finely chopped |
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2 tablespoons chopped fresh rosemary leaves |
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2 (7.4-ounce) jars roasted peeled whole chestnuts, coarsely broken |
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1/4 cup chopped fresh Italian parsley leaves |
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1 pound day-old ciabatta bread, cut into 3/4-inch cubes |
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2/3 cup freshly grated Parmesan |
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1 cup (or more) canned low-salt chicken broth |
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Salt and freshly ground black pepper |
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2 large eggs, beaten to blend |
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