Dissolve yeast in warm water. Cream together butter and sugar. Beat until light and fluffy. Beat in egg. Blend in dissolved yeast. Gradually stir in flour. Chill dough for about 2 hours. Shape into 3/4" balls. Dip one side in red sugar, the other in green sugar, leaving a clear stripe down the center. Place on buttered cookie sheets. Bake in pre-heated 375 degree oven for 10-12 minutes, or until lightly browned. Remove from oven immediately to wire racks to cool. Can be frozen.

From the web page: http://www.aaqt.com/vegetablepatch/cookiear.html on Nov