• Preheat oven to 350 degrees. Spray a 9x5 loaf pan with non-stick spray. Place a rectangle piece of parchment paper in the loaf pan that hangs over the sides.
• Mix brown sugar and cinnamon together in a small bowl and set aside.
• In a medium bowl beat butter and sugar until smooth. Add eggs one at a time just until blended, add vanilla.
• In another bowl whisk flour, salt, and baking powder together, then add to wet mixture and whisk just until blended. Whisk in milk just until smooth.
• Pour half the mixture into the loaf pan. Add half of the brown sugar mixture then half of the apples, gently pat into the batter.
• Add the rest of the batter into the loaf pan spreading gently with a spatula, followed by the remaining apples, walnuts, and remaining brown sugar mixture. Lightly pat.
• Place the loaf in the center of the oven and bake for 50-55 minutes or until a toothpick inserted into the center comes out clean.
• Let cool for 15-20 minutes on a baking rack. Use the parchment paper to pull the loaf right out, drizzle with glaze.

For the Glaze

• Whisk powdered sugar and milk together in a small bowl until combined.