Preheat the Oven: Set a rack in the center of the oven and preheat to 350°F (175°C). Line an 8x8-inch baking dish with parchment paper.
Make the Graham Cracker Crust:
In a food processor, pulse together the graham crackers, melted butter, and 1/2 teaspoon kosher salt until it resembles wet sand. Press the mixture evenly into the bottom of the prepared baking dish.
Prepare the Pecan Crumble:
Without cleaning the food processor, add the pecans, egg white, chocolate chips, vanilla extract, bourbon, and 1/4 teaspoon kosher salt. Process until the mixture is chunky and resembles a crumble topping. Set aside.
Bake the Crust:
Once the oven is ready, bake the graham cracker crust for 12-14 minutes, or until the edges turn golden brown. The center should not brown much. Remove from the oven and set aside.
Make the Bourbon Caramel:
In a medium pan, melt the butter over medium heat, then stir in the brown sugar. Allow the mixture to come to a gentle bubble and cook for 3-4 minutes, stirring occasionally until it thickens. Remove from heat and quickly stir in the heavy cream and bourbon until combined and smooth.
Assemble the Bars:
Pour the caramel over the baked graham cracker crust, tapping the pan lightly on the counter to distribute it evenly. Scatter the pecan crumble over the caramel, spreading it as close to the edges as possible. Dot any open spaces with extra pecan halves.
Bake Again:
Return the dish to the oven and bake for 10-11 minutes or until the pecan mixture looks dry and the caramel is bubbling at the edges.
Cool:
Once baked, cool the bars in the fridge or freezer for at least 45 minutes, ensuring the bottom of the pan is completely cool before slicing.
Slice and Serve:
Using a sharp knife, slice the bars into 16 pieces. Enjoy the rich flavors of bourbon, chocolate, and pecans in each bite!