Preheat the oven to 350°F/180°C and line a baking sheet with parchment paper.
Lay out the hazelnuts in a single layer and bake for 15min. While the hazelnuts are baking, prepare a bowl lined with a tea towel.
Pour the hazelnuts into the tea towel lined bowl and fold the tea towel over so the nuts are covered.
Once the hazelnuts have cooled completely, rub them together still wrapped in the towel to peel the skin off.