Mix sugar and cocoa together in saucepan. Add milk and stir together. Add butter. Cook over medium heat, stirring often, until mixture comes to a boil. Boil for 2 FULL minutes.
Remove from heat. Stir in vanilla. Stir in oatmeal and salt, until all the oatmeal is covered in chocolate. Immediately drop by tablespoon onto foil or wax paper. Cookies will set up within a few minutes. Enjoy!