Put Oreo cookies in a ziplock bag and hammer them with a rolling pin. Careful not to take out your anger on them.
Tip the crushed biscuits in the bowl and mix in the melted butter. Press the biscuits down in the serving container and stick them in the refrigerator to chill (I used a small pie tin, you can put in the individual ramekins/glasses)
Beat cream cheese and Nutella in a bowl until smooth. Again, no need to go crazy beating the heavenly mixture
Pour the Nutella mixture onto the Orea base and chill in the refrigerator for a minimum of 2 hours. Overnight is best.
For the garnish I spread around some Nutella, topped with hazelnuts. Or else if you are in the mood for some extra indulgence, whipped cream is a winner.