Start by melting the butter either on the pan or microwave and then pour into a mixing bowl.
Add in the sugar and brown sugar and whisk until fully combined.
Add in the eggs, salt and vanilla extract and whisk until combined.
Add in the chocolate chips and then sift in the plain flour, baking soda & baking powder. Mix until you get a thick cookie dough.
Using a large ice cream scoop, scoop some of the cookie dough (70g) and create an opening using the back of a spoon.
Fill it with Nutella and close it back up using the cookie dough.
Scoop the cookies onto a lined baking tray and then place into the fridge to chill for 1 hour.
Once chilled, pre-heat the oven to 180℃ and bake the cookies for 12 mins.
Let the cookies rest as they will still be soft when taking them out of the oven.