No-Knead Cinnamon-Swirl Bread

Ingredients

• Dough
• 6 cups (768g) unbleached all-purpose flour
• 1 tablespoon kosher salt
• ¼ cup (55g) granulated sugar
• 2½ teaspoons instant yeast
• 1½ cups buttermilk or milk
• 1 cup boiling water
• 6 tablespoons (¾ stick) unsalted butter, melted
• Softened unsalted butter, for greasing
• Assembly
• ¼ cup (32g) flour, for dusting
• ½ cup (110g) granulated sugar
• 1 tablespoon ground cinnamon
• 1 egg beaten with 1 teaspoon water