INGREDIENTS
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For the filling: 1 medium onion, cut into 1/2-inch pieces 2 large carrots, peeled and cut into 1/2-inch pieces 2 celery ribs, cut into 1/2-inch pieces 1 large parsnip, peeled and cut into 1/2-inch pieces 1 teaspoon chopped thyme 3 Tablespoons unsalte