Mix:
1 C. butter
½ C. powdered sugar
2 C. flour
Spread in 9 x 13 pan and bake 15 minutes at 350 degrees. Cool slightly.
Combine:
2 C. sugar
¼ C. flour
1 T. grated lemon rind
6 T. lemon juice
4 eggs, beaten
pinch salt
½ t. baking powder
Spread on crust and bake 350 degrees for 25 minutes or until set.
Cool and sprinkle with powdered sugar. Chill and cut in squares.