Put water, molasses, dry milk, salt, yeast, butter, 1 cup whole wheat flour, & 1 cup unbleached flour in a large mixing bowl.
Beat for 1 minute on high.
Add the other 1 1/2 cups of the whole wheat flour and mix well. Then beat on high speed again for 3 minutes.
Switch to the dough hook and gradually add more unbleached flour. Add it a little at a time until it forms a rough ball on the dough hook.
You can turn it out onto a lightly floured board to knead, or continue to knead in the mixer. Knead for 8 minutes, added flour sparingly if needed to keep the dough from sticking.
Butter a large bowl. Shape the dough into a ball and put in the bowl, turning it over to butter the top.
Cover with a damp bread cloth and allow to rise until doubled. That should take about an hour.
Butter 2 loaf pans. Set aside till needed.
After the first rise, punch the dough down and form into a ball. Cut it n half and form 2 loaves.
Place the loaves seam side down into the prepared loaf pans.
Cover again with a damp bread cloth and allow to rise a 2nd time.
Let rise until the dough is 1/2 to 1 inch above the top of the loaf pans. That should take about 45 minutes.
Bake in a preheated 375° F oven for 35 - 45 minutes.
Remove the bread from the pans and put them on a wire rack to cool.
If you want the top crust soft, put butter on the top.
Let cool completely before slicing for the best texture.