1

Prepare dough: In the bowl of a stand mixer with the whisk attachment, whisk egg yolks, whole eggs, sugar, butter and buttermilk. Add about 2 cups of the flour along with the yeast and salt; whisk until moistened and combined. Remove the whisk attachment and replace with a dough hook. Add all but ¾ cup of the remaining flour and knead on low speed for 5 minutes. Check the consistency of the dough, add more flour if necessary; the dough should feel soft and moist but not sticky. Knead on low speed 5 minutes more or until the dough clears the sides of the bowl. Turn the dough out onto a lightly floured work surface; knead by hand about 30 seconds. Lightly oil a large bowl. Transfer the dough to the bowl, lightly oil the top of the dough, cover and let double in volume, 2 to 2½ hours in a warm place.

2

Combine brown sugar, cinnamon and salt in a medium bowl. Mix until well incorporated. Set aside until ready to use.

3

Butter a 9x13-inch glass baking dish. Turn the dough out onto a lightly floured work surface. Gently shape the dough into a rectangle with the long side nearest you. Roll into an 18x12-inch rectangle. Brush the dough with the melted butter, leaving ½-inch border along the top edge. Sprinkle the filling mixture over the dough, leaving a ¾-inch border along the top edge; gently press the filling into the dough. Beginning with the long edge nearest you, roll the dough into a tight cylinder. Firmly pinch the seam to seal and roll the cylinder seam side down. Very gently squeeze the cylinder to cream even thickness. Using a serrated knife, slice the cylinder into 1½-inch rolls; yielding 12 rolls. Arrange rolls cut side down in the baking dish; cover tightly with plastic wrap and store in the refrigerator overnight or up to 16 hours.

4

Remove the rolls from the refrigerator and place in an oven that is turned off. Fill a shallow pan 2/3 full of boiling water and set on the rack below the rolls. Close the oven door and let the rolls rise until they look slightly puffy; approximately 30 - 45 minutes. Remove the rolls and the shallow pan of water from the oven.

5

Preheat the oven to 350°F.

6

When the oven is ready, place the rolls on the middle rack and bake until golden brown, or until the internal temperature reached 190°F. on an instant read thermometer, approximately 30 minutes.

7

While the rolls are cooling slightly, make the icing by whisking the cream cheese in the bowl of a stand mixer until creamy. Add the milk and whisk until combined. Sift in the powdered sugar, and whisk until smooth. Spread over rolls and serve immediately.