01 -
Grease a 23-centimetre springform pan with 1 tablespoon unsalted butter and set aside.
02 -
In a food processor, pulse hazelnuts with granulated sugar until finely ground. Add flour, cocoa powder, softened butter, and salt. Continue processing until well blended. Press the mixture evenly into the bottom of the prepared pan using your hands. Pierce the crust with a fork to prevent puffing.
03 -
Bake the crust in an oven preheated to 190°C for 18 to 20 minutes. Remove from the oven and allow to cool completely.
04 -
In a small saucepan, pour cold water and sprinkle the gelatin over it. Let stand for 2 minutes to bloom. Place over low heat and whisk until fully dissolved. Remove from heat.
05 -
In a mixing bowl, beat together chocolate hazelnut spread, softened cream cheese, and peppermint extract until smooth. Pour in the dissolved gelatin and beat on medium-high speed for 2 to 3 minutes, scraping the bowl as needed.
06 -
In a cooled mixing bowl, whip heavy cream with granulated sugar until soft peaks form.
07 -
Gently fold the cream cheese mixture into the whipped cream until fully incorporated. Pour the mousse filling over the cooled crust and smooth the surface. Refrigerate for at least 3 hours or overnight until set.
08 -
To unmold, run a plastic knife around the inside edge of the springform pan and release the sides.
09 -
Before serving, dust with powdered sugar and sprinkle the top with crushed peppermint candy canes.