In a large bowl or stand mixer with a dough hook, combine flours, sugar, yeast and salt. Stir to mix. Put milk and butter in a small pan over low heat, stirring occasionally until butter is melted. Remove from heat and let cool for two minutes. Stir in eggs and add to flour mixture, stirring until a soft dough forms. Knead with mixer or by hand for about 5 minutes. Dough will be soft; add a little flour as needed if the dough is too sticky to handle.