In a large saucepan over medium-high heat, melt the butter and add the sugar, and milk. Cook and stir often until the mixture comes to a rolling boil. Stop stirring and boil for 1 full minute. Remove the saucepan from the direct heat.

Stir in the Nutella, and peanut butter; stir in the salt and vanilla extract. Add the oats and mix thoroughly. Quickly drop the cookie mixture onto parchment paper by using a Tablespoon measuring spoon. Cookies will firm up and set after they cool.