Wash potatoes well, and put them into your crock pot for 3 hours with ½ cup of water. Cook them on high for 3 hours.
After 3 hours, take the potatoes out with tongs and set on a baking rack to cool for about 10 minutes (so they are cool enough to handle). Then, cut them in half length-wise, and scoop most of the insides out of the skins and empty into a large mixing bowl. (Leave about ?” of the insides in the potatoes for structure.)
Mash the potatoes, then combine with remaining ingredients. I recommend using a wooden spoon to combine the ingredients because the potatoes tend to get stuck in the beaters of an electric mixer.
Spoon the mixture back into the potato skins, or use a piping bag if you have one.
Place the potatoes on a cookie sheet and bake at 350° for 30-45 mins. depending on the size of the potatoes.