Eating expired Nutella is not recommended especially by the company who makes Nutella but I personally have eaten expired Nutella without any health problems or getting sick.
The expired Nutella doesn't taste as fresh as eating it when it is fresh or before the use by date but it's still okay to eat.
I keep some Nutella around and sometimes forget about it and then when I do find it weeks past the expiration date I decide to go ahead and eat it.
Never has it been a problem for me.