Scald the Milk: In a small saucepan over medium heat, heat the milk until it begins to bubble around the edges. Remove from heat and let it cool to about 110°F (43°C).

Activate the Yeast: In the bowl of a stand mixer, combine the warm milk, sugar, and 4 tablespoons of softened butter. Sprinkle the yeast over the mixture and let it sit for about 10 minutes, or until it becomes foamy.

Prepare the Dough: Add the salt, egg yolk, 1 whole egg, and 2 cups of flour to the yeast mixture. Using the dough hook attachment, mix on low speed until combined. Gradually add the remaining flour, 1/2 cup at a time, until a soft, slightly sticky dough forms.

Knead the Dough: Increase the mixer speed to medium and knead the dough for about 8-10 minutes, or until it becomes smooth and elastic.

First Rise: Lightly grease a large bowl with cooking spray. Place the dough in the bowl, turning it to coat all sides. Cover with a clean kitchen towel and let it rise in a warm place for about 1 hour, or until doubled in size.

Shape the Rolls: Punch down the dough to release any air bubbles. Turn it out onto a lightly floured surface. Roll the dough into a 16×8-inch rectangle. Fold the dough in half lengthwise and pinch the edges to seal. Cut the dough into 16 squares.

Second Rise: Place the dough squares onto a greased 9×13-inch baking dish, arranging them close together. Cover with a kitchen towel and let them rise for about 1 hour, or until doubled in size.

Preheat the Oven: Preheat your oven to 350°F (175°C).

Prepare the Egg Wash: In a small bowl, whisk together the remaining egg and water. Brush the tops of the rolls with the egg wash.

Bake: Bake the rolls in the preheated oven for 12-16 minutes, or until they are golden brown.

Brush with Butter: While the rolls are baking, melt the remaining 2 tablespoons of butter. As soon as the rolls are out of the oven, brush them with the melted butter.

Prepare the Cinnamon Honey Butter: In a small bowl, combine the softened butter, cinnamon, honey, and powdered sugar. Mix until smooth and creamy.

Serve: Serve the warm rolls with the cinnamon honey butter.