• Preheat the oven to 375 degrees F.

To Make the Rolls

• Brush 9-inch square cake pan with 1 tablespoon melted butter.
• Whisk flour, sugar, baking powder, baking soda, and salt together in a large bowl.
• Whisk buttermilk and 2 tablespoons melted butter together in a small bowl.
• Add liquid to dry ingredients and stir with a wooden spoon until liquid is absorbed (dough will look stringy), about 30 seconds.
• Transfer dough to a lightly floured counter and knead until smooth.
• Pat dough into 12 by 9-inch rectangle. Brush dough with 2 tablespoons melted butter. Sprinkle evenly with filling, leaving ½-border around edges of the dough. Press filling into the dough.
• Starting at the long side roll like a log and pinch and seal ends.
• Cut the log into 8 equal pieces.
• Place one roll in the center of the pan and then place the other around the perimeter.
• Brush the tops of rolls with the remaining 2 tablespoons of melted butter.
• Bake until edges are golden brown, about 23-25 minutes.
• Let rolls cool for 5 minutes before icing.

Cinnamon Filling

• Combine sugars, cinnamon, cloves, walnuts, and salt in a small bowl. Add melted butter and stir with a fork until mixture resembles wet sand; set filling mixture aside.

Glaze

• While the buns cool, in a medium bowl, whisk together the powdered sugar, and vanilla. whisk in enough orange juice to make a soft glaze that drips in a wide ribbon off the whisk. Drizzle over the slightly cooled rolls.