Line a baking sheet with wax paper or parchment.

Bring the sugar, milk, butter, and cocoa to a boil in a medium saucepan over medium heat, stirring occasionally, then let boil for 1 minute. • • •Remove from the heat. Add the oats, peanut butter, vanilla, and salt, and stir to combine.

Drop teaspoonfuls of the mixture onto the prepared baking sheet, and let sit at room temperature until cooled and