Mix sliced apples,1 cup sugar, spices and lemon juice; set aside.
sift together remaining sugar, salt, flour and baking powder; add butter. Mix thoroughly using a fork; reserve 1 cup butter mixture.
stir in well-beaten egg yolks and milk to remaining butter mixtrue. Fold in beaten egg whites; mix thoroughly. Pour int well-greased 9 by 9 baking pan. Drain apple mixture; spread on top of batter. Cover with reserved butter mixture. Bake at 400 degrees for 45 minutes. When done, sprinkle additional cinnamon over to of cake (i don't do this )