Set the oven to 375°F / 191°C and leave it for 15 minutes so the rack is actually hot. Weigh country bread, yellow onion, celery, unsalted butter, fresh thyme, low-sodium chicken broth, egg, flat-leaf parsley, kosher salt. Bread stuffing is cooked in Thanksgiving as its own plate, not as a copy of a restaurant menu. Toast the bread, fold it with buttered onion and celery, and bake it with broth until the top is crisp and the inside is custardy. Amounts are for 4 from foods this library can count.