
¾ cup whole milk
1 cup plus 2 tablespoons salted butter, softened; divided
3¼ cups all-purpose flour, divided
1 (¼-ounce) envelope instant quick-rise yeast (2¼ teaspoons)
¼ cup granulated sugar
1 teaspoon salt, divided
¼ cup water (120°F to 130°F)
1 large egg, beaten
1 cup packed light brown sugar
1 tablespoon plus 2 teaspoons ground cinnamon, divided
1 (8-ounce) package cream cheese, softened
2 tablespoons sour cream
1 tablespoon pure vanilla extract
4 cups powdered sugar