1 c. butter
2 tbsp. shortening
2/3 c. sugar
2 1/2 c. flour
1/2 c. cornstarch
Chopped pecans (optional)

Mix, pat into ungreased pan about 1/3 inch thick. Prick over entire surface. Bake at 325 degrees about 25 to 30 minutes or until a golden brown. Take from oven and mark in squares. Break when cool.