To begin, cream together your butter, shortening, Nutella, and sugars in your mixing bowl.
Add in your egg and hazelnut extract. Beat until fluffy.
In a separate bowl, stir together the flour, baking powder, baking soda, and salt.
Stir the dry ingredients into the creamy mixture until combined - make sure to scrape the bowl with a rubber spatula.
Cover with foil or plastic wrap and refrigerate for at least an hour.
When you are ready to bake, preheat your oven to 375 degrees.
Scoop the dough out into 1 inch balls.
Form them with your hands if you need to, but a small scoop works perfectly.
Dip a fork in sugar and lightly press each ball in a criss-cross fashion like you would peanut butter cookies.
Bake for 9 minutes.
Cool a couple minutes, then transfer to a rack and cool completely.
Store in an airtight container.
Enjoy!
Notes
These cookies spread quite a bit on the cookie sheet, be sure to give them space.Baking time above of 27 minutes assumes three pans of 12 cookies each, being bakes in succession.