1/2 c. sugar
1/2 c. butter
2 egg yolks
1 1/2 c. flour
1 tsp. baking powder
1 tsp. vanilla
A pinch of salt

Press this mixture into the bottom of a 9 x 9 inch pan.

2 egg whites, beaten stiff
1 c. brown sugar
3/4 c. chopped walnuts

Spread topping over mixture and bake at 350 degrees for 30 minutes.