01 -
Preheat oven to 175°C and cover a rimmed baking sheet with aluminum foil. Lightly grease the foil with butter.
02 -
Place graham crackers side by side on the tray, breaking as needed to fill the surface in an even layer.
03 -
Combine unsalted butter, brown sugar, chopped pecans, and salt in a medium saucepan. Heat over medium, stirring constantly, until the mixture comes to a boil. Continue boiling for 2 minutes.
04 -
Remove saucepan from heat and mix in vanilla extract. Immediately pour the hot caramel pecan mixture over the arranged graham crackers, spreading evenly to the edges with a spatula to ensure full coverage.
05 -
Transfer to the oven and bake for approximately 10 minutes, or until the topping is bubbling.
06 -
Allow to cool completely on the tray, then break bark into individual pieces once set.