Commence by preheating the oven to precisely 350°F. Simultaneously, prepare a rimmed baking sheet by lining it meticulously with aluminum foil.

Once the sheet is lined, it is prudent to lightly grease the foil using a small portion of butter. Arrange the graham crackers on the prepared sheet in a systematic manner, ensuring that they cover the entire surface. If necessary, the crackers may be broken to achieve an optimal fit.

In a medium-sized saucepan, amalgamate the unsalted butter, brown sugar, pecan pieces, and salt. Place the saucepan on medium heat and bring the contents to a gentle boil. It is imperative to continuously stir the mixture for a duration of 2 minutes to prevent scorching.

Following the stipulated time, remove the saucepan from the heat and carefully incorporate the vanilla extract into the mixture.

Pour the mixture immediately over the arranged graham crackers, ensuring a uniform distribution. Utilize a spatula to facilitate the spreading process, making certain that the crackers are entirely covered and the pecans are evenly dispersed.

Place the baking sheet in the preheated oven and allow the bark to bake until it manifests a bubbly consistency, which typically takes around 10 minutes.

Once baked to perfection, remove the baking sheet from the oven and allow the Pecan Pie Bark to cool to room temperature. Once cooled, it is advised to break the bark into individual pieces prior to serving.