If using canned pumpkin, make sure that you don't use canned pumpkin pie 'filling' (which is sweetened and spiced); use canned pumpkin that is 100% pumpkin puree. If you want to make sugar pumpkin puree yourself, you can split a sugar pumpkin (or butternut squash) in half and scrape out the seeds. Butter the cut side of the pumpkin and bake cut side down on a parchment-lined baking sheet in a 375ºF/190ºC oven until very tender, about 35 to 45 minutes. When cool enough to handle, scoop out the flesh and puree in a blender or food processor, or pass it through a food mill.
If you want to balance the sweetness of the sauce, you could add a scant teaspoon of apple cider vinegar or lemon juice to it, or to taste. Conversely, adding more liquor will take the edge off as well.
Outside of the U.S., I often use speculoos cookies in place of the Graham crackers for the crust. If you go that route, you might want to reduce the butter in the crust by about 20% since speculoos cookies tend to be more buttery than Graham crackers.
I use a
glass-bottom springform pan for cheesecakes, which makes serving them much easier.