In a saucepan, combine butter, milk, sugar, salt and cocoa powder and heat over medium heat. Bring to a rolling boil and let boil for one minute. Remove your saucepan from the heat.
Add Nutella and vanilla to hot mixture and stir until combined. Add oats, hazelnuts and stir until completely incorporated.
Drop by spoonfuls onto baking sheets lined with wax paper. Let cool, and enjoy.
shredded toasted coconut or dried cherries, toasted almonds can be added instead of the hazelnut