### Part 1: Prepare the Pecan Crust

Preheat your oven to 325°F (160°C). Lightly grease a 9-inch springform pan.

In a medium bowl, combine the crushed graham cracker crumbs, finely chopped toasted pecans, and granulated sugar. Mix until well combined.

Pour the melted unsalted butter over the crumb mixture. Stir until all the crumbs are evenly moistened and resemble wet sand.

Press the mixture firmly and evenly into the bottom of the prepared spring-form pan. Bake for 10 minutes. Remove from the oven and let it cool completely. Increase oven temperature to 350°F (175°C) for the cheesecake.

### Part 2: Prepare the Cheesecake Filling

In a large mixing bowl, beat the softened cream cheese on medium speed until smooth and creamy, about 2-3 minutes. Scrape down the sides of the bowl as needed.

Gradually add the granulated sugar, all-purpose flour, and salt. Beat on low speed until just combined, ensuring not to overmix.

Stir in the vanilla extract and room temperature sour cream until smooth.

Add the eggs one at a time, mixing on low speed after each addition just until the yolk disappears. Do not overmix.

Wrap the bottom and sides of your springform pan tightly with several layers of heavy-duty aluminum foil for a water bath. Place the springform pan inside a larger roasting pan.

Pour the cheesecake filling evenly over the cooled pecan crust.

Carefully place the roasting pan with the springform pan into the preheated 350°F (175°C) oven. Pour hot water into the roasting pan until it comes about halfway up the sides of the springform pan.

Bake for 60-75 minutes, or until the edges are set but the center still jiggles slightly. Turn off the oven, crack open the door, and let cool in the water bath for 1 hour. Remove, then cool on a wire rack for 1-2 hours.

Once completely cooled, cover loosely and refrigerate for at least 6 hours, or preferably overnight.

### Part 3: Prepare the Caramel Pecan Topping

In a heavy-bottomed saucepan, combine the granulated sugar and water over medium heat. Stir until sugar dissolves, then cook undisturbed until deep amber. Remove from heat.

Carefully whisk in the warmed heavy cream, then the butter until smooth. Stir in the vanilla extract.

Allow the caramel to cool slightly for 10-15 minutes, then stir in the toasted pecan halves.

### Part 4: Assemble & Drizzle

Once the cheesecake is chilled and firm, gently spread the caramel pecan topping evenly over the surface.

In a microwave-safe bowl, combine the semi-sweet chocolate chips and vegetable oil. Microwave in 30-second intervals, stirring, until smooth and melted.

Drizzle the melted chocolate over the caramel pecan topping in a decorative pattern.

Refrigerate for an additional 30 minutes to allow the topping and chocolate to set. Carefully remove the sides of the springform pan, slice, and serve!