FIRST LAYER:

1/2 c. butter
1 c. sugar
2 eggs, beaten
1 1/2 c. sifted flour
1 tsp. baking powder

SECOND LAYER:

1 c. brown sugar
1 egg white
3/4 c. chopped walnuts
1/2 tsp. vanilla

Best made 1 day ahead. First layer: mix in order given. Put in springform pan. Second Layer: whip egg white until stiff. Add brown sugar, nut and vanilla. Put on first layer and bake 30 minutes at 350 degrees.