Graham cracker layer:
In a medium bowl, combine the graham cracker crumbs, cinnamon, brown sugar, and salt. Add the melted butter to the mixture and stir until the crumbs are well coated and resemble wet sand.
Cheesecake layer:
In a mixing bowl, whip the heavy whipping cream until stiff peaks. Set aside. In the same bowl (no need to clean it), beat the softened cream cheese with the powdered sugar, vanilla extract, and salt.
Pumpkin layer:
Use the same mixing bowl (again, no cleaning needed) to mix the pumpkin puree, powdered sugar, cinnamon, vanilla extract, and salt. Mix until well combined.
Assembling:
Take a scoop of the graham cracker mix and place it at the bottom of each cup or jar, filling up about a quarter of the cup. Use the back of a spoon to make sure the crumbs are flat and create an even graham cracker crust layer.
Next, add a layer of cheesecake mixture until it fills half of the jar. After that, put in the creamy pumpkin layer until it reaches about three-quarters full, and finish it off with a dollop of whipped topping on the top.
Cover with plastic wrap or mason jar lids, place the mason jars in the refrigerator, and allow them to chill for at least 2-3 hours, or until the layers are set. Optional: add a sprinkle of cinnamon on top before serving.