In a large bowl, cream the shortening, cream cheese and sugar. Beat in egg yolk, vanilla and lemon peel. Combine the flour, salt and cinnamon; gradually add to creamed mixture. Beat in food coloring if desired. Cover and refrigerate for 30 minutes or until easy to handle.
Using a cookie press fitted with the disk of your choice, press dough 2 in. apart onto ungreased baking sheets. Sprinkle with nonpareils and colored sugar if desired. Bake at 350° for 12-15 minutes or until set (do not brown). Remove to wire racks. Yield: about 9 dozen.