1. Cream together butter and peanut butter.
2. Add in sugars.
3. Mix in egg, milk and vanilla
4. Next add in flour, baking soda, baking powder and salt.
5. Mix to combine
6. Add in chocolate chips.Gently fold Nutella through batter, do not over stir.Scoop into balls and place on cookie sheet .
7. Bake at 350 degrees for 10-12 minutes or until barely brown. Do not over bake. They should look like they need to bake for another minute or two.