Start by removing all skin and fat from cooked chicken or turkey. Dice into even sized chunks and add to a medium sized bowl.
Add chopped celery, apple, green onion and parsley. Mix well until evenly distributed.
Add mayonaise, mustard, salt and pepper, and mix until evenly blended.
At this point I usually put into the fridge to let ingredients set for 30 to 60 minutes. When ready to serve spread mixture onto chosen bread or on top of bed of lettuce. Serve immediately and enjoy!