Combine gingersnap crumbs, spices, melted butter, and sugar. Press firmly into a springform pan and freeze for 10–20 minutes.
Beat cold heavy cream until stiff peaks form. Set aside.
Beat cream cheese until smooth. Add pumpkin puree, sugars, and mix until combined.
Beat in vanilla, pumpkin pie spice, cinnamon, and salt until creamy.
Gently fold whipped cream into the pumpkin mixture until fully combined.
Spread filling evenly over the chilled crust and smooth the top.
Cover and refrigerate for at least 8 hours or overnight.
Slice with a sharp knife and top with whipped cream or caramel.
