Creating a Snickerdoodle Cheesecake can be a seamless process if you follow these clear steps:

1. Preheat Oven: Preheat your oven to 325°F (160°C).
2. Make the Crust: In a medium bowl, mix graham cracker crumbs, sugar, melted butter, and ground cinnamon until well combined. Press the mixture firmly into the bottom of a 9-inch springform pan to form an even layer.
3. Prep for Cheesecake: In a large mixing bowl, blend the softened cream cheese, granulated sugar, and vanilla extract with an electric mixer until smooth and creamy.
4. Add Eggs: Add eggs one at a time, mixing on low speed after each addition until just combined.
5. Incorporate Cinnamon: Stir in ground cinnamon into the cheesecake filling until evenly mixed.
6. Pour filling into crust: Carefully pour the cheesecake filling into the prepared crust, ensuring it is spread evenly.
7. Bake: Place the springform pan in the preheated oven and bake for 50-60 minutes, until the edges are set but the center still slightly jiggles.
8. Cool and Chill: After baking, turn off the oven and let the cheesecake cool in the oven for about 1 hour with the door slightly open. Remove from the oven, allow to cool at room temperature for 30 minutes, then refrigerate for at least 1 hour.
9. Prepare Topping: In a small bowl, mix sour cream, sugar, and vanilla extract until smooth. Once the cheesecake is cooled, spread the sour cream mixture evenly on top.
10. Add Cinnamon Sugar: Sprinkle the cinnamon and sugar mixture on top of the sour cream layer.
11. Chill Again: Return the cheesecake to the refrigerator and chill for an additional 2 hours to set completely before serving.

These simple instructions will guide you in creating this incredible Snickerdoodle Cheesecake with ease.