Butter Cookies

In a large bowl, cream together the butter and white sugar until light and fluffy. Beat in the egg, then stir in the vanilla. Combine the flour and salt; stir into the sugar mixture, add sultanas into the dough (optional). Cover and chill for at least one hour. Chill cookie sheets.

Preheat oven to 400ºF / 200ºC. Press dough out onto ungreased,chilled cookie sheets.

Bake for 8 to 10 minutes in the preheated oven, or until lightly golden at the edges. Remove from cookie sheets to cool on wire racks.