Heavenly Shortbread

Directions

1. 1
   Preheat oven to 325 degrees F (170 degrees C).
2. 2
   Cream softened butter thoroughly. ( If using margarine, add four drops of butter flavoring.) Slowly add sugar.
3. 3
   Sift flour and corn starch before adding. Mix well. Press into an ungreased jelly roll pan 11 x 15 x 1 1/2 inches.
4. 4
   Bake 30 minutes or until very light brown. Score and cut while warm.