Creating Lemon Icebox Bars is simple if you follow these easy steps:

1. Prepare the Crust: In a medium bowl, mix together the graham cracker crumbs, melted butter, and granulated sugar until well combined. Press the mixture firmly into the bottom of a greased 9×9-inch baking dish. Set aside.

2. Prepare the Filling: In another bowl, whisk together the granulated sugar, lemon juice, lemon zest, eggs, and vanilla extract until smooth. Gradually add the flour and salt, mixing until all ingredients are well incorporated.

3. Combine Mixtures: Pour the lemon mixture over the prepared crust, spreading it evenly.

4. Chill: Place the dish in the refrigerator and let it chill for at least 3-4 hours, or until set. For the best texture, consider chilling overnight.

5. Serve: Once set, remove the bars from the refrigerator. Dust the top with powdered sugar and slice into squares. Optionally, garnish with lemon slices for an extra touch.

These steps will help you create delicious Lemon Icebox Bars that are sure to impress!