Preheat oven to 425°F and grease an 8×11-inch baking dish with butter. Put aside.
In a small bowl, mix the filling components: brown sugar, granulated sugar, cinnamon, salt, and melted butter. Combine till effectively blended and put aside.
In a big bowl, whisk collectively the flour, sugar, baking powder, and baking soda. In a separate container, combine collectively the buttermilk, 4 tablespoons of the melted butter, and vanilla extract and pour over the flour combination. Utilizing a picket spoon, stir collectively till a scraggy combination types. Knead just a few occasions along with your palms till dough is clean and divide into two equal parts.
Flip dough out onto a frivolously floured floor, and press or roll out every bit into an 8×12-inch rectangle. Sprinkle the cinnamon filling evenly over every bit of dough, leaving a 1/4-inch border. Utilizing your palms, gently pat the filling into the dough.
Beginning with the longest facet nearest you (12-inch edge), roll the dough right into a log. Pinch the ends closed and minimize every log into 8 equal rounds, for a complete of 16 rolls.
Organize the rolls within the ready baking dish and brush tops with remaining butter. Bake till golden brown, about 20 minutes.
Whereas rolls bake, make the icing:
In a medium bowl, combine collectively the cream cheese and powdered sugar. Add milk or buttermilk till desired consistency is reached.
After eradicating from oven, let rolls cool within the pan on wire rack for five minutes. Drizzle icing over cinnamon rolls and serve whereas heat. Get pleasure from!