Shortbread Squares

1 lb. soft butter , 1/2 cup cornstarch
1 cup sifted powdered sugar, 3 1/2 cups all purpose flour
1/2 tsp Salt


In Mixing Bowl, cream butter and sugar. Combine the rest of the ingredients, gradually adding to the mixture.
Pat into ungreased pan (15 x 10 x 1)
Pierce several times with a fork.
Bake at 325*cfor 35-40 minutes until lightly browned.
Cut into squares while hot.
( variation - add almond extract or lemon extract)