Rub brown sugar on both halves of pork roast then put in slow cooker. Pour apple juice and soy sauce over roast, then sprinkle with salt and pepper to taste.
Cover and cook on low for 6-7 hours or until pork is cooked through.
Remove roast and allow to stand for 15 minutes covered with foil. Remove any fat bits from sauce. Combine cornstarch and water in a small bowl then add to sauce.
Turn slow cooker up to high and then cover and cook for 15 minutes. Serve with sauce and rice.