In a large mixing bowl, beat the softened cream cheese with an electric mixer until smooth.
Gradually add in the powdered sugar and vanilla extract, mixing until well combined.
In a separate bowl, whip the heavy cream until stiff peaks form.
Gently fold the whipped cream into the cream cheese mixture until fully incorporated.
Pour the filling into the graham cracker pie crust, spreading it evenly.
Refrigerate the pie for at least 4 hours or until set.
Before serving, sprinkle the crushed Cinnamon Toast Crunch and ground cinnamon on top for added crunch and flavor.