In mixer bowl, cream butter ... egg yolk and vanilla. Gradually add sugar and ... but pliable. Spray shortbread mold with vegetable shortening. Press ... wedges. Makes one shortbread.
This is an old Scottish ... so I added vanilla and baking soda/powder and increased ... sugar gave the shortbread a definite "cookie" sweetness while ... nuts, if you prefer.
Ingredients: 6 (extract .. flour .. soda .. sugar .. temperature ...)