Using a sharp knife, split the vanilla bean in half, scrape out the seeds, and set the seeds aside.
In a small bowl, combine the gelatin, erythritol, and boiling water. Stir until dissolved with no lumps. Set aside.
Using an electric mixer and another bowl, whip the room temperature cream cheese until smooth.
Heat the gelatin mixture in the microwave for 30 seconds to one minute until just melted
Pour the melted gelatin into the whipped cream cheese. Whip with an electric mixer until smooth.
Add the cream, vanilla extract, and vanilla bean seeds to the cream cheese and whip for 3 to 4 minutes. Pour mixture over the prepared base. Smooth and level the top.
Allow to set for six hours or overnight, covered, in the fridge.