This recipe is awesome. I did read previous reviews on crust. I used 1 stick of butter (1/2 c) and baked for 5 min. instead of 15 minutes. AND..for those who want to use other type cookies for crust, it comes out to 1/2 cup of crumbs. For the filling, I followed exactly. For those wanting to know how many lemons for zest. A Tblspoon was about 3 medium lemons. Even though the recipe called for 1/4 c of lemon juice, I just juiced the 3 lemons and it was almost 1/2 c, but it did not affect the filling. We just like it more lemony. I did follow the advice of whipping all ingrediants well. The filling came out light and fluffy. This is, without a doubt, the best lemon bars I have ever eaten. Because of the amount of lemon zest needed to top, and lemons being $1 a piece I opted to garnish with powdered sugar. My family loved it and it is the best the next day, if it makes it that long.