Preheat oven to 350°F (175°C). Grease a 9-inch springform pan.
In a bowl, combine crushed Cinnamon Toast Crunch and melted butter. Press the mixture into the bottom of the springform pan to form the crust.
Bake the crust for 10 minutes. Remove from oven and let cool slightly.
Making the Cheesecake
In a large bowl, beat cream cheese and sugar until smooth. Add vanilla extract and mix well.
Beat in eggs one at a time, then stir in sour cream. Do not overmix.
Pour the cheesecake filling over the prepared crust.
Bake for 60-70 minutes, or until the edges are set but the center still jiggles slightly. Turn off the oven and let the cheesecake cool inside for 1 hour.
Remove the cheesecake from the oven and let it cool completely. Cover and refrigerate for at least 4 hours, or preferably overnight.
Topping and Serving
In a small bowl, combine chopped Cinnamon Toast Crunch, sugar, and cinnamon.
Sprinkle the topping over the cheesecake. Slice and serve.
Notes
For best results, use full-fat cream cheese and allow it to come to room temperature before mixing. This will help prevent lumps in the cheesecake.