Cut bread slices into small cubes that are about 1/2-inch in size. Use serrated bread knife to cut easier.
Spread bread in two large, rimmed baking sheets evenly and place the trays in the oven.
Let them bake and harden for about 2 hours.
Take them out and you can prepare the stuffing right away.
Stuffing:
Preheat oven to 375. Grease a 9x13 casserole dish. (You can also use a deep 9x9 baking dish).
Dice onion and celery. Peel, core, and dice the apple. Try to get all the cuts as equal as possibly.
Preheat a medium cooking pan over medium heat. Add oil.
Add onion and celery and saute until onions are transparent.
Add apples and cook until veggies are softened. Take off heat.
In a large mixing bowl (and I mean large), combine stale bread cubes, cooked veggies, thyme, parsley, salt and pepper. Gently mix everything until evenly incorporated.
In a separate bowl, whisk the eggs. Whisk in broth and apple juice. Season with some salt and stir well.
Pour the liquid into the bowl with bread and veggies and quickly mix everything together as evenly as possible.
Transfer into prepared baking dish and bake for 40-45 minutes.