Moravian Scotch Cakes

1 1/2 cups butter
1/2 cup sugar
4 cups flour
2 teaspoons caraway seeds

Mix the flour, caraway seeds and sugar together. Work in the butter with the finger tips until well blended. Roll out about 1/3 inch thick on floured board. Cut in small squares. Bake on a greased cookie sheet at 325F for about 15 minutes. Do not overbake. When cool, decorate with boiled icing and sprinkle with colored sugar.