**Make the Cinnamon Crust**:
- Preheat the oven to 325°F (165°C).
- In a large bowl, combine the flour, sugar, and cinnamon.
- Add the melted butter and stir until the mixture forms coarse crumbs.
- Press the crust mixture into the bottom of a springform pan.
- Bake for 10-12 minutes, until golden. Let it cool.
**Make the Cheesecake Filling**:
- In a stand mixer, beat the cream cheese and sugar until smooth.
- Add the sour cream, eggs, and cinnamon, and mix until fully incorporated.
- Pour the filling over the cooled crust.
**Bake the Cheesecake**:
- Place the cheesecake in the oven and bake for 1 hour, until the center is slightly jiggly.
- Let the cheesecake cool at room temperature, then refrigerate for at least 4 hours or overnight.
**Prepare the Churro Topping**:
- In a medium saucepan, combine water, butter, and salt. Bring to a boil.
- Stir in the flour and cook until it forms a dough.
- Transfer to a piping bag and pipe churro-shaped swirls on a baking sheet.
- Bake at 375°F (190°C) for 15 minutes, then roll in cinnamon sugar.
**Assemble the Cheesecake**:
- Once the cheesecake is chilled, place the churro topping on top.
- Serve chilled, optionally with caramel sauce or whipped cream.
**Calories (kcal)**: 350 kcal per serving