Butter Batter Brown Bread

I was visiting Mom and Pops this weekend and Mom mentioned a bread recipe she used quite a bit when I was little, so we decided to bake up a few loaves:
The recipe is from a box of Land 'o' Lakes butter. To start, you heat 1/3 cup butter, 1/4 cup molasses, 1/4 cup honey, 1 Tablespoon salt and 2 1/2 cups buttermilk until warm (about 105 degrees):

While that is heating, mix together 3 cups whole wheat flour and 2 packages of active dry yeast.

When the butter mixture is warm, pour it into a big mixing bowl and add your wheat flour/yeast mixture, 1 1/2 cups rolled oats and 2 eggs:

Mix with an electric mixer until just moistened, and then mix for 3 minutes at high speed.

Then stir in enough all purpose flour (about 3 cups) to make a stiff dough:

Turn the dough into  lightly oiled bowl to rise until doubled, about 1 1/2 hours:

Once the dough has risen, split it into two pieces and shape them into balls. put each ball of dough into a greased round casserole dish and let rise until each loaf is doubled again, about 45 minutes. Bake at 375 degrees for 25-35 minutes, or until done. The loaves will sound hollow when lightly tapped on the bottom (if you've taken the loaf out of the pan to check for doneness and it needs to go back in the oven, there is no need to put it back into the casserole - it can go straight onto the oven rack).