I used 5 potatoes for this small crockpot.
peel and cut enough potatoes for your family (i used my apple corer peeler slicer to make this easy!)
spray inside of crockpot with cooking spray (i used my pampered chef spritzer with olive oil)
put potatoes inside crockpot
cut 1/4 cup of butter into peices and place ontop of potatoes
cook for 4.5 hours on high, when potatoes are tender and ready to mash add the normal ingredients you would to make them and mash them all together!
i added some milk, more butter, and some chicken drippings from the chicken i was making in the crockpot next to it!