Using a hand mixer, beat cream cheese, pumpkin, sugar, pumpkin pie spice, and cinnamon until blended. Fold in whipped topping.
Transfer the pumpkin cheesecake to the ready-made graham crust. Using an offset spatula, gently spread to the edges of the crust and smooth the top.
Refrigerate for at least 4 hours or until firm, overnight is even better. I like to freeze the cheesecake prior to slicing so that the wedges have sharp, clean edges.
Just before serving, add additional whipped topping if desired.
Notes
Pumpkin Puree: If your pumpkin looks watery, blot it with paper towels before adding to the filling. This helps the cheesecake set firm.
Whipped Topping: Substitute with 2 cups of freshly whipped heavy cream, sweetened to taste. Fold in gently to keep the filling light.
Crust Options: Use classic graham crackers, crushed gingersnaps for extra spice, or a nut crust (pecans, almonds, or walnuts) for a gluten-free option.
Chilling: Chill at least 4–6 hours, but overnight is best for clean slices. For faster setting, freeze for 30–45 minutes.
Storage: Refrigerate tightly covered for 3–4 days. For longer storage, freeze (without toppings) up to 2 months. Thaw overnight in the refrigerator before serving.
Serving Tip: For bakery-style slices, use a sharp knife dipped in warm water, wiping clean between cuts.