Heat oven to 325°F. Line a 9×13-inch pan with parchment and lightly grease.
Stir graham crumbs, white sugar, salt, and melted butter until evenly moistened.
Press crumbs firmly into pan. Bake 8 minutes. Cool 5 minutes.
Beat cream cheese and granulated sugar until smooth and creamy, about 2 minutes.
Mix in flour, sour cream, and vanilla. Scrape bowl well.
Blend in liquid eggs on low just until combined. Do not overmix.
Reserve 1½ cups batter. Stir pumpkin, brown sugar, spices, and salt into reserved batter.
Spread plain cheesecake batter over the warm crust in an even layer.
Spoon pumpkin batter on top. Swirl gently with a knife for a marbled look.
Bake 35–40 minutes until edges are set and center wobbles slightly.
Cool completely, then chill at least 3 hours before slicing into bars.
Notes
Try a gingersnap crust for extra spice, or add chopped toasted pecans on top for crunch. Serve chilled with lightly sweetened whipped cream. Store covered in the fridge up to 5 days, or freeze bars up to 2 months.This recipe is an original creation inspired by classic Easy Pumpkin Cheesecake Bars flavors. All ingredient ratios and instructions are independently developed.