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. 

Serve the warm rolls with the butter.