Wash potatoes and then place in a medium saucepan on medium heat with about 1 1/2 cups water. Bring to a boil. Add salt after water boils.
Let potatoes continue to cook over medium heat for 20-30 mins. or until potatoes are soft when you place a fork in them.
When potatoes are cooked and soft, drain all of the water from the pan. Add butter to the pan and stir to coat potatoes.
Using fork, slightly crush potatoes and then let set for about 10 minutes, covered, to soak up the salt and butter.
When ready to serve, add the fresh parsley and combine. Add salt and pepper to taste, if needed.