Step 1: Preheat the Oven

• Preheat your oven to 325°F (160°C). Grease a 9-inch springform pan and set aside.

Step 2: Prepare the Crust

• In a medium bowl, mix the graham cracker crumbs, sugar, and melted butter until well combined.
• Press the mixture firmly into the bottom of the prepared springform pan to form an even layer.

Step 3: Bake the Crust

• Bake the crust in the preheated oven for about 8-10 minutes until lightly golden.
• Remove from the oven and let cool while preparing the filling.

Step 4: Make the Cheesecake Filling

• In a large mixing bowl, beat the softened cream cheese until smooth and creamy.
• Add the granulated sugar and vanilla extract, mixing until well combined.
• Beat in the eggs, one at a time, ensuring each is fully incorporated before adding the next.
• Stir in the sour cream, flour, and ground cinnamon until the mixture is smooth and creamy.

Step 5: Swirl in Brown Sugar Mixture

• In a small bowl, combine the brown sugar and an additional tablespoon of cinnamon.
• Pour half of the cheesecake filling into the crust, followed by half of the brown sugar mixture.
• Using a knife or skewer, gently swirl the fillings together. Repeat with the remaining cheesecake filling and brown sugar mixture.

Step 6: Bake the Cheesecake

• Bake the cheesecake in the preheated oven for 55-65 minutes, or until the center is set but still slightly jiggly.
• Turn off the oven and crack the door open, allowing the cheesecake to cool gradually for about 1 hour.

Step 7: Chill the Cheesecake

• Remove the cheesecake from the oven and let it cool to room temperature.
• Refrigerate for at least 2 hours, or preferably overnight, to set completely.

Step 8: Prepare the Cream Cheese Frosting

• In a medium bowl, beat the softened cream cheese and butter until smooth and creamy.
• Gradually add the powdered sugar and vanilla extract, mixing until well combined.
• Add milk as needed to reach your desired consistency.

Step 9: Frost the Cheesecake

• Once the cheesecake is fully chilled, remove it from the springform pan.
• Spread the cream cheese frosting evenly over the top of the cheesecake.