1Warm the milk until lukewarm, add the granulated sugar and active dry yeast, stir, and let sit until foamy.
2Combine flour and salt in a bowl or stand mixer, then add the milk mixture, melted butter, and egg until a dough forms.
3Knead the dough until smooth and elastic.
4Place the dough in a greased bowl, cover, and let rise until doubled in size.
5Peel and finely chop the apples, then cook with 1 tablespoon of granulated sugar in a skillet over medium heat until softened; remove from heat to cool.
6Combine softened butter, brown sugar, granulated sugar, and cinnamon in a bowl.
7Roll the risen dough into a 12x20 inch rectangle.
8Spread the cinnamon-sugar butter mixture evenly over the dough, reserving a small amount for the top if desired, then spoon the cooled apples over the top.
9Cut the dough into sections, stack the pieces standing up on their long sides, and place into a greased and parchment-lined 9x5 inch loaf pan.
10Cover and let rise until puffy.
11Sprinkle the reserved cinnamon-sugar mixture over the top and bake at 350°F until golden brown and baked through, covering with foil if the top browns too quickly.
12Whisk together powdered sugar, maple syrup, and milk or cream to create a drizzle, and drizzle over the bread once slightly cooled.