Halve or quarter potatoes as necessary to make even sizes. Place in 4 to 6 quart slow cooker. Add garlic, oil, salt and water and mix to coat.
Cover and cook on high for 3 1/2 to 4 1/2 hours until potatoes are tender. Mash potatoes roughly with a fork.
Stir in cream cheese until blended, then add enough milk for desired consistency. You can serve this right away, or cover and hold it in the slow cooker up to 2 hours on low.
14 1/2 cup servings.
Tried this for the first time on 10/7/07, after having the recipe for a while. It was easy and it was delicious!