These are among my favorite desserts. The Shortbread Crust is simplified by using melted butter. Original Source: Allrecipes.com "Lemon Square Bars" by Ralph. I reduced the white sugar in the topping to about 1 1/2 to 1 3/4 cups. This works well with Meyer Lemons too -- reduce the white sugar in the topping to about 1 1/4 - 1 1/3 Cup as the Meyer Lemon juice is a bit sweeter.