Preheat oven to 350 degrees Fahrenheit.

In a bowl, blend the softened butter, 1/2 cup of white sugar, and 2 cups of all-purpose flour until well mixed.

Press the mixture firmly into the bottom of a 9x13 inch pan to form the crust.

Bake the crust in the preheated oven for 20 minutes.

While the crust is baking, prepare the lemon filling.

In a separate bowl or blender, blend 1/4 cup of all-purpose flour, 1 1/2 cups of white sugar, 4 eggs, and 6 tablespoons of lemon juice until the mixture is light and fluffy.

Once the crust is baked, pour the lemon mixture evenly over the hot crust.

Return the pan to the oven and bake for an additional 20 minutes at 350 degrees Fahrenheit, or until the filling is set.

Remove the lemon bars from the oven and let them cool slightly.

While the bars are still warm, sprinkle 3 tablespoons of white sugar evenly over the top to create a crystalline finish.

Allow the lemon bars to cool completely before cutting.

For best results and clean cuts, refrigerate the bars until thoroughly chilled.

Cut the cooled lemon bars into 18 equal slices, approximately 2x3 inches each.

Serve chilled and enjoy!