Classic Lemon Bars

I must confess, I have so many Lemon Bar recipes. I'm not sure why I keep trying more out.
 Actually I love the first recipe I ever made..... Well I guess I will just start a collection. :)

Classic Lemon Bars

Crust

1/2 cup butter softened

1/4 c sugar

1 cup flour

Filling

2 eggs

3/4 cup sugar

3 Tablespoons lemon juice

2 Tablespoons flour

1/4 teaspoon baking powder

Confectioners' sugar

For the crust, cream butter and sugar; gradually add the flour. Press into a greased 8 inch square baking dish. Bake at 375 for 12 minutes. Cool slightly.
For the filling, beat the eggs, sugar, lemon juice, flour and baking powder until frothy ( to check for that, stop mixing and let it settle to see if it it foaming ). Pour over warm crust and bake for 15-20 minutes or until lightly browned. Dust with confectioners' sugar. Cool before cutting into bars.

 ** I actually prefer my Lemon Bars to be refrigerated in an air tight container.