In a small bowl, dissolve the yeast in the warm water. Add the sugar and allow the mixture to sit and get foamy (about 5 minutes).
In the bowl of a stand mixer fitted with the dough hook, combine the buttermilk, honey, 2 tablespoons butter and the yeast mixture.
Add 2 cups of flour and the salt to the bowl. Blend with the dough hook until the mixture is sticky and wet
Add in the remaining flour and mix with the dough hook on medium speed for 7-10 minutes.
Remove the dough from the bowl and spray the bowl with cooking spray.
Put the dough back into the bowl and spray the top of the dough with cooking spray.
Cover the bowl with plastic wrap and place the bowl in a warm place (in the oven with the light turned on is perfect) until doubled in volume, about 1 hour.
Punch the dough down to deflate, and divide it into two equal pieces.
Roll and form each half by hand into an evenly shaped loaf and place each half into a 9x5 loaf pan that has been sprayed with cooking spray.
Allow the loaves to rise again in a warm, draft-free place until doubled in volume (about 50 minutes).
Preheat oven to 375 degrees.
Bake the loaves for about 30-35 minutes or until nicely golden and they sound hollow when tapped.
Once baked brush the tops of the loaves with the reserved 1 tablespoon butter.
Remove the loaves from the pans and allow to cool for about 30 minutes and then you're ready to slice and serve.