1. Preheat oven to 350 degrees. Cream butter in an electric mixer for 3 minutes until light and fluffy. Add the sugars and nutella and mix well, scraping down the sides of the bowl to mix evenly.

2. Add the eggs, one at a time, beating for 30 seconds between each. Add vanilla and mix well.

3. Sift dry ingredients together in a separate bowl and mix into wet ingredients. Fold in chocolate chips and hazelnuts and then refrigerate for 10 minutes.

4. Spoon tablespoon-sized drops of dough onto parchment paper line cookie sheets. Bake at 350 degrees for 10-12 minutes. Allow to cool on cookie sheet for a few minutes before transferring to baking rack.