Place the yeast and warm water into a bowl or container, stir once and let rest.
Add the milk and buttermilk to a microwave safe container, and heat until warmed. It is okay if the buttermilk separates at this point, it will not affect the recipe.
Stir 2 tbsp. Softened butter into the milk and buttermilk mixture until melted.
In a mixing bowl, combine the milk mixture, yeast, granulated sugar, salt and 1 cup of flour. Beat on high with a dough hook until combined well and smooth.
Add the egg to the bowl, and beat until well incorporated.
Slowly add the remaining flour a little at a time until the dough comes cleanly away from the dough hook attachment in the mixer.
Flour the dough slightly, and turn into a ball in a well greased large mixing bowl.
Cover and let the dough rest to rise for 1 hour.
Place the dough onto a floured surface, and roll it out until it is ½ inch thick.
Cut the dough into 12 even rectangular shapes.
Fold the ends of each rectangle under to form a roll shape, and let sit on a parchment or silicone mat lined baking sheet to rise slightly for 20 minutes.
Preheat the oven to 400 degrees.
Bake the rolls for 12-15 minutes until lightly browned on top.
Brush with melted butter on top if desired.
Combine the ingredients for the cinnamon honey butter in a bowl and mix until completely combined.