Fine Crisp Cakes

Directions

1. 1
   Preheat oven to 325 degrees F (165 degrees C).
2. 2
   Beat butter in a bowl until creamy; add sugar and continue beating until light and fluffy. Beat in egg yolk.
3. 3
   Whisk flour, allspice, and turmeric together in a bowl. Sift flour mixture into butter mixture and stir until dough is combined. Press dough into a 9-inch square baking dish. Beat egg white in a small bowl and brush dough with egg white.
4. 4
   Bake in the preheated oven until cake feels firm when lightly pressed in the center, 30 to 45 minutes. Cut into squares while cake is still hot; cool in baking dish.