Put the diced apples into the slow cooker. Top the diced apples with the mustard, honey, apple juice, apple cider vinegar and beef or chicken stock. Mix everything together.
Then, combine all of the spices together ( onion powder, garlic powder, cinnamon, paprika, rubbed sage, salt, black pepper). Rub the spice mixture on top of the pork.
Put the pork on top of the apples in the slow cooker.
Cook on low for 8 hours or on high for 6 hours.
Remove the pork from the slow cooker, strain the apples, and keep the liquid.
Then, shred the pork in a large bowl, add the apples on top, and add a little bit of the liquid (enough to make the pulled pork moist). You can throw the rest of the liquid away. Mix the pulled pork, and apples together.