Spray slow cooker with non-stick cooking spray, and place roast in slow cooker.
In a small bowl, combine the Parmesan cheese, honey, soy sauce, basil, garlic, oil and salt; pour over pork.
Cover and cook on low for 6-7 hours or until a meat thermometer reads 160°.
Remove meat to a serving platter; cover with foil to keep warm.
Skim fat from cooking juices and transfer to a small saucepan.
Bring liquid to a boil. Combine cornstarch and water until smooth and gradually stir into pan. Bring to a boil; cook and stir for 2 minutes or until thickened.