Easy Caramel Pie
["1 can condensed milk", "1 pie crust"]
["Place unopened can of milk in a deep pan covered with water. The can must stay covered with water at all times.", "Bring to a boil and then reduce to slow boil.", "Boil for 3 hours.", "Remove from heat and let cool completely.", "Bake pie shell ahead of time.", "When filling is cool, pour into shell.", "Top with meringue or Cool Whip."]
["condensed milk", "crust"]