Brown Sugar Cinnamon Rolls

Ingredients

• 4 Eggs, room temperature
• 1 Egg Yolk, room temperature
• 1/4 Cup Granulated Sugar
• 7 1/2 Tablespoons Unsalted Butter, melted
• 3/4 Cup Buttermilk, room temperature
• 4 3/4 Cups All-Purpose Flour, more for dusting
• 2 1/4 Teaspoons Instant Dry Yeast
• 1 1/4 Teaspoons Kosher Sea Salt Flakes, divided
• 1 Tablespoon Ground Korintje Cinnamon, baked
• 1 Cup Dark Brown Sugar, packed
• 1/4 Cup Cream Cheese, softened
• 3 Tablespoons Whole Milk
• 1 1/2 Cups Powdered Sugar