Super Spritz Cookies
["1 c. butter or margarine", "3/4 c. sugar", "3 large egg yolks", "2 3/4 c. flour", "1 tsp. vanilla"]
["With electric mixer at high speed, cream butter until soft. Add sugar gradually, continuing to cream about 5 minutes until light and fluffy.", "Add egg yolks and vanilla; beat well.", "Add flour in 3 additions; mix well by hand or with electric mixer after each addition; dough will be stiff.", "Shape dough into 2 rolls; wrap in waxed paper and refrigerate at least 1 hour.", "Put in electric cookie maker or put by spoonfuls on cookie sheet. Sprinkle with colored sugar if desired.", "Bake for 7 to 10 minutes at 400\u00b0 or until just starting to turn light golden around edges, being careful not to overbake."]
["butter", "sugar", "egg yolks", "flour", "vanilla"]