1 lb. butter
6 eggs, separated
3 c. brown sugar
5 c. flour
2 tsp. baking powder
2 tsp. cinnamon
2 tsp. vanilla
1 lb. dates
1 lb. English walnuts
1 c. black walnuts
Juice of 1 lemon

Cream butter and sugar, add egg yolks, vanilla, and lemon juice. Sift flour, baking powder, and cinnamon together. Flour the dates and nuts with 1/2 of the flour mixture. Fold into the sugar mixture, then fold in beaten egg whites. Bake for 2 1/2 hours at 250 degrees.