In a large bowl, whisk together the maple syrup, apple, mustard, olive oil, and seasonings.
Add in your pork loin chops, thin apple and onion slices into the marinade bowl and ensure that the mixture has coated everything well.
Let the marinated pork sit in the fridge for a minimum of one hour.
Once the pork is ready, preheat your oven to 375 F and prepare a baking sheet.
Lay out the pork, onions and apples on a baking sheet and bake for about 20-30 minutes or til the pork reaches an internal temperature of 145-150 F.
Serve and enjoy!