Preheat oven at 350. Prepare a baking sheet with cooking spray. In a mixing bowl, combine margarine, sugar, egg white, chocolate, and vanilla.�20 In another mixing bowl, combine flour and salt. Mix wet ingredients with dry ingredients just until moistened. Spoon dough into cookie press fitte� with template of desired shape. Press cookies 5 cm apart onto prepared baking sheet. Bake 10 to dozen minutes, or until firm. From "365 Great Cookies You Can Make"