Meanwhile, place the cold water in a small bowl. Sprinkle with gelatin and let stand 1 minute. Add boiling water and stir until gelatin is dissolved. Set aside.
3
In the chilled bowl, combine Splenda, cocoa powder, salt, whipping cream and vanilla until roughly mixed. With an electric mixer on medium speed, beat mixture until it becomes stiff. Do not over-beat or you will end up with chocolate butter. Beat in the gelatin mixture just until combined.
4
Add mixture to pie crust and chill. Cover with whipped cream topping.