1. Preheat your oven to 350°F (175°C). Line a 9×9-inch baking pan with parchment paper, leaving an overhang on two sides for easy removal.
2. In a medium bowl, combine the flour, granulated sugar, and salt. Stir in the melted butter until the mixture forms a crumbly dough.
3. Press the dough evenly into the bottom of the prepared pan. Use the back of a spoon or your fingers to create a smooth, firm crust layer.
4. Bake the crust for 15 minutes, or until it just starts to turn golden around the edges. This step ensures a sturdy base that won’t get soggy.
5. While the crust bakes, whisk together the eggs, brown sugar, corn syrup, melted butter, and vanilla extract in a large bowl until smooth and glossy.
6. Remove the crust from the oven, then sprinkle the chopped pecans evenly over it.
7. Pour the gooey filling mixture over the pecans, spreading gently with a spatula to cover all the nuts.
8. Return the pan to the oven and bake for 25-30 minutes. The filling should be set but still slightly jiggle in the center—think of it like a perfectly gooey pie.
9. Allow the bars to cool completely in the pan on a wire rack. This can take about 1-2 hours; chilling them briefly in the fridge helps if you want cleaner cuts.
10. Using the parchment overhang, lift the bars out of the pan and cut them into 12 squares. Serve and enjoy!

One tip I learned from my early kitchen experiments: don’t rush the cooling process. I once sliced into a warm batch too soon, and the filling oozed everywhere, turning my neat bars into a sticky mess. Patience pays off with bars that hold their shape and have that signature gooey texture.