Preheat over to warm, 170 degrees.

Place butter, buttermilk and water into a microwave safe bowl. Microwave until butter is mostly melted and the liquid reaches 115-120 degrees. Mixture will separate, don’t worry. Add to the bowl of stand mixer. Attatch the dough hook.

Add in 3 cups of the flour, sugar, yeast and salt. Turn on low speed and mix until combined. With remaining 1 cup of flour,  add a little at a time until the dough cleans sides of bowl.  Usually, 1/2 cup of the flour during this step. 

Allow dough knead on medium low for 4-5 minutes.  Transfer dough to a countertop sprayed with non-stick cooking spray. 

Divide dough into two equal pieces. Then cut each piece into 6 pieces. Roll each piece into a round ball. Place into a lightly greased 9 x 13 inch baking dish(s), placing 1/2 inch apart. Turn oven to off and place rolls in the warm oven for 20 minutes.