5lbYukon Gold or russet potatoespeeled and cut in 2-inch chunks
1cupchicken broth
4clovesgarlicpeeled (optional)
1 1/2tspsaltplus more to taste
1/2cupbutter1 stick
3/4cupwarm milk or half-and-halfplus more as needed
4ozcream cheeseor 1/2 cup sour cream
black pepper and chopped chivesto taste
Instructions
Put the potatoes, broth, garlic and salt in a 6-quart slow cooker. Stir.
Cover and cook on HIGH for 3 1/2 to 4 hours, or on LOW for 6 to 7 hours, until a fork slides through every piece.
Add the butter and cream cheese. Mash right in the crock with a potato masher.
Stir in the warm milk a little at a time until creamy. Season with salt and pepper.
Switch to WARM. Stir every hour and add a splash of milk if they get stiff. Keep them at 140°F or above (check once with a thermometer).
Notes
Hold on WARM at 140°F or above and serve within about 2 to 4 hours. Do not reheat cold mashed potatoes in the slow cooker: heat them until steaming first. Refrigerate leftovers within 2 hours.