Add the heavy cream to a mixing bowl and beat with mixers until stiff peaks form

In a separate bowl, beat the softened cream cheese. Add the vanilla extract and pumpkin and mix again. Beat in the brown sugar and pumpkin pie spice

Fold the whipped heavy cream into the pumpkin mixture until combined and smooth

Pour the whipped pumpkin pie filling into the graham cracker pie crust. Smooth the top out using the rubber spatula