Preheat oven to 350°F (175°C). Line a 9×13 inch baking pan with parchment paper, leaving overhang on the sides.
In a medium bowl, combine gingersnap crumbs, melted butter, sugar, and salt. Press firmly into the bottom of prepared pan. Bake for 8-10 minutes until slightly set.
In a large mixing bowl, beat cream cheese until completely smooth, about 2-3 minutes.
Add pumpkin puree and brown sugar to the cream cheese. Beat until fully combined and smooth.
Beat in eggs one at a time. Add cinnamon, ginger, nutmeg, cloves, vanilla extract, and salt. Mix until just combined.
Sprinkle flour over mixture and fold in gently until incorporated.
Pour filling over pre-baked crust, spreading into an even layer. Tap the pan gently on the counter to release air bubbles.
Bake for 35-40 minutes until edges are set but center still has a slight jiggle.
Turn off oven, crack door open, and let cheesecake cool in oven for about 30 minutes.
Cool completely at room temperature for about 2 hours, then refrigerate for at least 4 hours or overnight.
When ready to serve, lift bars from pan using parchment overhang. Cut into squares with a clean, sharp knife.
If desired, top with whipped cream, crushed gingersnap cookies, or a drizzle of caramel sauce before serving.
Notes
For best results, ensure all ingredients are at room temperature before beginning.
Do not substitute pumpkin pie filling for pure pumpkin puree.
The bars can be made up to 3 days in advance and stored in the refrigerator.
For clean cuts, dip knife in hot water and wipe clean between slices.
Nutrition facts are estimates and may vary based on ingredients used, portion sizes, and preparation methods.