1. Preheat oven to 400ºF.

2. In a large skillet, sauté onion, celery, and nuts in 4 tablespoons of fat on medium heat, until onion is tender but not browned.

3. Add matzo farfel and toast lightly, about 1 minute.

4. Combine seasonings, egg and broth in a separate bowl and add to matzo mixture.

5. Stuff chickens lightly, and in a large roasting pan, brush with remaining 2 tablespoons of rendered fat and sprinkle with salt and pepper.

6. Spread remaining stuffing in a large, greased baking dish and set aside.

7. Roasting time for a whole stuffed chicken is 1 ½ hours. Roast at 400ºF for 15 minutes, then lower temperature to 350ºF for the remaining 1 hour to 1 hour, 15 minutes. 20 minutes before chickens are finished, place stuffing on bottom rack to roast.