Preheat oven to 350°F and line a 9x13-inch pan with parchment paper.Mix flour and granulated sugar, then cut in cold butter until crumbly.Press mixture into pan and bake for 15 to 18 minutes until lightly golden.Toast pecans for 5 minutes and set aside.Whisk eggs, brown sugar, corn syrup, melted butter, vanilla, and salt.Fold pecans into filling and pour over baked crust.Bake for 30 to 35 minutes until set with a slight jiggle in the center.Cool completely before slicing into bars.