2) Whip the cream until it forms stiff peaks. In a separate bowl, whip the Nutella and cream cheese until thoroughly combined.
3) Combine the whipped cream with the nutella cream cheese and add in the vanilla extract. Gently fold until the cream is completely mixed in, with no streaks.
4) OPTIONAL STEP. If you want an extra layer, we added in half a teaspoon of cherry butter as a layer on top of the Oreo base- think Blackforest gateau moussey goodness!
6) You can eat these straight away (and will probably want to) but ideally chill them in the fridge for at least an hour to allow the mousse to set.