1 cup soft margarine
2 cups flour
1/2 cup powdered sugar
1/4 tsp. salt
Press into 9 x 13 pan
Bake 20 minutes at 350 degrees
Beat:
4 eggs
2 cups sugar
grated rind of 1 lemon
1/2 tsp. baking powder
6 TBSP (1/3 cup) lemon juice
Pour over first layer
Bake at 350 for 20 - 25 minutes more. Watch closely. Top should be consistency of pie filling and light brown. Sprinkle powdered sugar on top while hot. Cool well before cutting into squares and removing from pan.