In a large bowl, combine softened cream cheese, sugar, flour, and vanilla extract. Mix well using an electric mixer until smooth. Stop to scrape the bottom and sides of the bowl.
4 (8-ounce) packages full-fat cream cheese, 1 cup granulated sugar, 2 Tablespoons all-purpose flour, 1 teaspoon pure vanilla extract
Add sour cream, heavy cream, and 1 egg. Mix on medium-low speed until combined. Add remaining eggs, one at a time, mixing on low speed just until combined between each addition.
1/2 cup full-fat sour cream, 1/4 cup heavy cream, 4 large eggs
Pour half of the cheesecake batter into the prepared Golden Oreo crust. Arrange the unwrapped Little Debbie Christmas tree cakes on top of the filling with their tops pointing in to the center of the circle so you can fit all six of them. Pour remaining batter on top, completely covering the Christmas tree cakes.
8 Little Debbie Christmas Tree Cakes
Transfer the cheesecake to the preheated oven and place a large pan of very hot water on the rack below the cheesecake. Bake for 60-70 minutes. The cheesecake is done when the edges are set and very slightly golden brown but the center of the cake is still jiggly with a wobble to it. Turn off the oven but leave the cheesecake in it with the oven door ajar so it can cool gently for 30-45 minutes.
Carefully remove the cheesecake from the oven (it will still be very hot) and run a thin paring knife around the inside edge of the pan to loosen the cheesecake from the sides of the pan. Let the cheesecake cool completely at room temperature.
Transfer the cooled cheesecake to the fridge and chill for at least 6 hours or overnight.