3 with chestnuts apples and leeks Recipes

acorn squash , halved lengthwise and seeded (about 1 lb each), extra-virgin olive oil, plus more for brushing, kosher salt & freshly ground black pepper, unsalted butter, diced celery, leeks , halved lengthwise and sliced crosswise 1/4 inch thick, granny smith apples, peeled and diced, chopped thyme, rye bread, crusts removed , bread cut into 1/2-inch dice (day old, rustic, about 6 cups), vacuum-packed cooked chestnuts, chopped parsley, heavy cream, vegetable stock or 1/3 cup low-sodium broth

white bread cubes (preferably from a pullman loaf; crust discarded), leeks (white and pale green parts only), cut into 1-inch pieces (4 cups), unsalted butter, celery ribs, sliced 1/4 inch thick, chopped thyme, granny smith apples, peeled and cut into 1/2-inch cubes, bottled peeled roasted chestnuts (14 to 16 oz), halved, heavy cream, chopped flat-leaf parsley