Mix the flour, sugar, salt and baking powder. Cut the shortening in until it resembles course crumbs.
Measure the egg and add enough water to make 1/4 cup, beat together. Add egg and vanilla to crumb mixture; mix well.
Put through the cookie press onto cookie sheets. Decorate with sprinkles or colored sugar if desired. Bake at 375 degrees F (190 degrees C) for 10 -12 minutes or until very light brown and set.
