Set the Instant Pot to sauté mode, heat olive oil, and sauté mushrooms, onions, and garlic until softened (about 3 minutes).
Add chicken broth, chopped apple, wild rice blend, dried cranberries, thyme, salt, and pepper. Stir well.
Place chicken thighs on top (do not stir) and close the lid.
Cook on high pressure for 25 minutes, then allow a 10-minute natural release before manually releasing any remaining pressure.
Open the lid, remove the chicken, shred it, and return it to the pot.
Stir everything together and let it sit for a few minutes to absorb flavors.
Sprinkle with fresh parsley, serve hot, and enjoy!