For the crust – 2 cups graham cracker crumbs – 1/4 cup brown sugar – 8 tbsp unsalted butter 1 stick melted For the filling – 1 15 oz can 100 % pumpkin purée – 1 tsp pumpkin pie spice – 32 oz cream cheese (softened at room temp) – 1 1/4 cup granulated sugar – 1/4 tsp salt – 3 eggs – 1/4 cup sour cream