In a large bowl, stir together the ingredients for the pumpkin pie layer. Stir until well combined. Set aside.
In a stand mixer, whisk together the ingredients for the cheesecake layer. Mix until creamy and fully combined. Set aside.
To assemble your parfaits, start with two tablespoons of the granola, followed by pumpkin pie, then more granola, then cheesecake, and so on. Top with whipped cream or cool whip and sprinkle with pumpkin pie spice.