Whisk the soup, broth, ranch seasoning, and garlic in the slow cooker until smooth.
Season pork chops with salt and pepper. Dot the butter around the cooker.
Nestle the chops into the sauce, turning to coat well.
Cover and cook on Low for 6–7 hours or on High for 3–4 hours, until tender.
Stir in the cream cheese. Cover for 10 minutes, then whisk until silky.
Mix cornstarch with water. Pour into the sauce, stir, and cook 10–15 minutes to thicken.
Serve chops with the creamy sauce and sprinkle with parsley.