Ingredients:

• 2 cups (178g) old-fashioned oats
• 1 cup (114g) whole wheat flour
• 2 cups (480ml) boiling water
• 2/3 cup (160ml) whole milk
• 4 teaspoons instant yeast
• 1 tablespoon (18g) kosher salt
• 6 tablespoons (86g) honey
• 6 tablespoons (90ml) vegetable oil, plus more for greasing the pans
• 5 cups (600g) bread flour, plus more for dusting
• For the topping
• 1 large egg
• 1 tablespoon water
• 1/4 cup old-fashioned oats