In a large bowl, dissolve the 2 packages of yeast and 1 tbsp sugar in 1/2 cup of the warm water. Let sit for 5-10 minutes until bubbly.
Stir in the remaining 1 1/2 cups of warm water, the apple butter, melted butter, honey, and salt.
Beat in the whole wheat flour, exactly 1 cup at a time.
Gradually add enough of the all-purpose flour to create a stiff, workable dough.
Turn the dough onto a floured surface. Knead in enough extra flour to prevent sticking, continuing until the dough is smooth and elastic (about 8-10 minutes).
Place in a lightly greased bowl, cover with a damp towel, and let rise in a warm place until doubled (about 1 1/2 to 2 hours).
Punch the dough down and divide it evenly into 2 parts. Shape into loaves and place into two greased loaf pans.
Cover with the damp towel again and let rise until doubled (about 1 hour).
Preheat oven to 425°F.
In a small bowl, beat the egg with 1 tsp of water. Brush this egg wash evenly over the tops of both loaves.
Bake at 425°F for 10 minutes.
Reduce the oven temperature to 375°F. Bake for an additional 25 minutes, or until the loaves sound hollow when tapped.
Remove immediately from the pans and cool completely on wire racks.