Preheat your oven to 350°F and lightly grease a 9-inch springform pan with non-stick spray and parchment paper. In a mixing bowl, beat the cream cheese until smooth, then gradually mix in the granulated sugar and flour. Add the eggs one at a time, followed by the heavy whipping cream and vanilla. Bake for 10 minutes at 350°F, reduce the temperature to 200°F, and continue baking for 30-35 minutes until the center is slightly jiggly. Let cool in the oven with the door ajar, then refrigerate overnight.

Preheat the oven again to 350°F and prepare a 9-inch round cake pan by greasing it. In a bowl, whisk together the dry ingredients: flour, baking powder, ground spices, and salt. In a separate bowl, cream the unsalted butter and brown sugar until light and fluffy. Add in the eggs and vegetable oil, mixing well, then gradually combine the wet and dry ingredients with milk. Pour the batter into the prepared pan and bake for 15-17 minutes, or until a toothpick comes out clean. Cool completely and refrigerate overnight.

In a mixing bowl, cream the unsalted butter until light and fluffy. Gradually add the powdered sugar and beat until combined. Next, mix in the vanilla extract and heavy whipping cream, continuing to beat until the frosting is smooth and airy. Adjust the consistency by adding more cream if necessary. Set the frosting aside in a cool place while you assemble the Thanksgiving Piecaken.

Once fully cooled, trim the cheesecake and spice cake layers to ensure they are all the same size. Start with a base layer of cheesecake, followed by a layer of spice cake. Spread a layer of frosting between each layer, repeating the process until you’ve used all layers. Finish with a generous frosting on top and around the sides. Chill for 20-30 minutes to set the layers before adding any decorative touches with cinnamon or additional frosting.

Once your Thanksgiving Piecaken has set, slice it carefully to reveal the beautiful layers inside. Serve immediately to family and friends, pairing with whipped cream or spiced apple cider for an extra festive touch. Each bite will offer a delightful mix of cheesecake, spice cake, and pumpkin pie, making this dessert the highlight of your holiday celebration!