Scotch Shortbread

Directions

1. 1
   Mix together 2 1/4 cups flour with sugar; cut in butter as for pastry.
2. 2
   Bind together with egg yolk.
3. 3
   Knead lightly using other 1/4 cup flour as needed.
4. 4
   Divide into 4 portions.
5. 5
   Roll each one out to a 1/2-inch circle.
6. 6
   Score edges and prick center with fork. Mark into wedges with knife going down 1/8-inch.
7. 7
   Bake at 350° for approximately 30 minutes; let cool 5 minutes before removing from cookie sheet.