Nutella® has been certified Kosher under the supervision of the Kashruth Division of the Orthodox Union.
https://www.ferrerofoodservice.com/us/en/nutella-kosher-halaal-vegetarian-certifications#:~:text=Nutella%C2%AE%20has%20been%20certified,Division%20of%20the%20Orthodox%20Union.&text=Nutella%C2%AE%20has%20been%20certified%20Halaal%20by,INDEPENDENT%20HALAAL%20TRUST%20(N.I.H.T.).