Scotch Shortbread

Directions

1. 1
   Have butter at room temperature.
2. 2
   Mix cornstarch, flour and sugar in a bowl.
3. 3
   After completely mixing, knead in butter thoroughly.
4. 4
   Spread mixture evenly in a 9 x 13-inch pan; flatten evenly with hands and spatula.
5. 5
   Prick entire surface with a fork (many times).
6. 6
   Bake for 1 hour at 325°.
7. 7
   Score into pieces with sharp knife after taken out of oven.
8. 8
   Should be cool before eating.
9. 9
   Sprinkle with 10x sugar when slightly cool.