Preheat Oven: Preheat your oven to 350°F. Grease a 9x13-inch baking pan, or line it with parchment paper leaving a slight overhang for easy removal.
Prepare Pie Crust: Unroll the refrigerated pie crusts and fit them into the bottom of the prepared baking pan. Overlap them slightly in the center and press down gently to cover the entire bottom securely.
Make Filling: In a large mixing bowl, whisk together the light corn syrup, packed brown sugar, melted butter, eggs, vanilla extract, and salt until completely smooth. Add the pecan halves and stir with a spatula until they are evenly coated.
Pour Filling: Carefully pour the pecan filling over the pie crust in the baking pan. Use your spatula to spread the pecans out so they are evenly distributed.
Bake: Bake in the preheated oven for 30-35 minutes. The bars are done when the filling is completely set in the center and the top is a deep golden brown.
Cool: Remove from the oven and place on a wire rack. You must allow the pan to cool completely to room temperature before cutting into bars to ensure the gooey filling sets up properly.