Preheat oven to 180 degree C. Line a baking tray with parchment paper and set aside.
Take nutella in a bowl and put it in freezer for 10 mins to firm up. Take flour, baking soda, salt in a bowl and mix well. Set aside.
Take butter, brown sugar, sugar and vanilla in a bowl and cream it well till fluffy.
Add in egg and beat till creamy.
Now add in flour mix in and mix well. Now add in chocolate chips and mix well.
Now use a icecream scoop and scoop some dough. Flatten it and spoon some nutella in the center and bring the sides together and seal it. Roll it into a smooth dough and flatten it lightly.
Arrange it in a baking sheet and bake for 10 to 15 mins depending on the size of the dough.
Now remove it from oven and cool it down for 10 mins.
Now remove it to a cooling rack and cool completely.