Scoop out 12, 1 tablespoon size of Nutella and place on a baking sheet on top of parchment paper and place in freezer for about 20 mins.
In a bowl whisk together flour, salt, baking soda and baking powder and set aside.
With your mixer combine brown sugar and melted butter and mix for about 5 mins on med-high speed.
Add in your egg and vanilla mix for another 3 mins.
With mixer on low speed add in your dry ingredients and mix until just combined.
Place dough in fridge to chill for 10 mins.
While dough chilling preheat your oven to 350°F and line two baking sheets with parchment paper and set aside.
Now take the Nutella out of freezer and roll them into balls and with your large cookie scoop take some cookie dough flatten it out and place one Nutella ball in the center of dough and wrap dough around Nutella. Do this until all dough and Nutella is used up (about 12 cookies).
Now take your granulated sugar and place in a bowl and roll each cookie ball in sugar until covered and place on prepared baking sheet.
Place baking sheets in fridge for another 10 mins before baking.
Bake for 8-10 mins until edges golden brown. No longer then 10 mins though don't want to over bake them.
Remove from oven and let them sit for 5 mins before transferring to cooling rack.