Perfected Lemon Bars

Mix together the following:
½ pound butter
1 ¾ cups flour
¾ cup powdered sugar
1 teaspoon vanilla
Press into a 9 X 13 pan to form a crust.
Bake 20 minutes in 350ْ
Remove from oven before edges brown.

Beat 4 eggs together.
Add: ¾ cup lemon juice
1 ¾ cups sugar
5 Tablespoon flour
1 t baking powder
Mix all well.
Pour over crust.
Bake an additional 25 minutes
After baking, dust with powdered sugar.
Cool before cutting.