Lemon Squares

This is my older sister Sandra's recipe.
Every time she would come to visit, she would bake something delectable.

Crust:

1/2 cup powdered sugar
2 cubes of butter
2 cups of flour
bake in a 9x13 pan at 350 for 20 min, cool.

Filling
4 eggs, beaten
1 tsp baking powder
2 cup sugar
4 tbsp flour
2/3 cup lemon juice
Bake at 400 for 25 min. Sprinkle with powdered sugar.