Place the potatoes, stock, soup, thyme and onion in the slow cooker. Cover and cook for about 8 hours, or until potatoes are tender. Add salt and pepper to taste.
Add the cream cheese and stir until melted and blended. Serve topped with the diced bacon.
STOVETOP:
Follow the slow cooker instructions, except cook the potatoes, stock, etc., over a medium heat in a dutch oven until potatoes are tender. Add the cream cheese and stir until blended.