In a skillet, Pan-toast the hazelnuts over high heat for 2-3 minutes or until they start to give off a toasty aroma. Set aside to cool, then roughly chop. Set aside.
In a large mixing bowl, beat together the sugars, vegan egg, vegan butter and vanilla.
Add in the baking powder, baking soda, salt and flour. Beat until fluffy.
Fold in the chocolate and chopped hazelnuts.
The dough should be nice and sticky, yet firm enough to roll into large dough balls.
Place dough balls in a bowl or on a baking sheet and freeze for at least 30 minutes. 1-2 hours works too.
Preheat oven to 350 degrees and line a baking sheet with parchment.
Bake at 350 for about 15 minutes.