Prepare the Batter

• In a medium bowl, whisk together flour and baking powder.
• In a separate large bowl, cream together granulated sugar and softened butter until light and fluffy.
• Beat in the eggs one at a time, then add vanilla extract.
• Gradually mix in the dry ingredients, alternating with the milk, until the batter is smooth.

2. Make the Apple Mixture

• Toss the chopped apples with granulated sugar and ground cinnamon in a bowl until evenly coated.

3. Assemble and Bake

• Preheat the oven to 350°F (175°C). Grease a loaf pan or line it with parchment paper.
• Pour half the batter into the prepared loaf pan, spreading it evenly.
• Add a layer of the apple mixture, then sprinkle half of the brown sugar and cinnamon mixture on top.
• Add the remaining batter, followed by the rest of the apple mixture and cinnamon sugar swirl.
• Use a knife or skewer to gently swirl the layers together for a marbled effect.
• Bake for 50-60 minutes, or until a toothpick inserted in the center comes out clean. Let the bread cool completely in the pan.

4. Glaze and Serve

• In a small bowl, whisk together powdered sugar and milk to make the glaze.
• Drizzle the glaze over the cooled bread. Slice and enjoy!