Scottish Shortbread

Directions

1. 1
   In a bowl, cream butter and sugar together until light and fluffy. Add egg yolk and beat until mixture is smooth. Gradually add flour and mix until just blended. Turn into a shallow lightly greased 12 x 8 pan and spread evenly with back of spoon or spatula. Dip the tines of a fork in warm water. Make narrow ridges in the dough approximately 1/8-inch deep by marking lengthwise with tines of the fork. Repeat dipping and marking until entire surface is scored with lines. Bake at 350° for approximately 1/2 hour or until golden brown. Cut into 1 1/2-inch squares while still hot. Let cool and remove from pan.