Preheat oven to 350°F (175°C). Grease a 9x5-inch loaf pan and line it with a parchment paper sling for easy removal.
2. Toss the Apples
In a small bowl, combine the diced apples, brown sugar, and cinnamon. Toss until evenly coated. Set aside.
3. Mix the Dry Ingredients
In a large bowl, whisk together the flour, granulated sugar, baking powder, and salt.
4. Mix the Wet Ingredients
In a separate medium bowl, whisk the milk, eggs, melted butter, and vanilla extract until smooth.
5. Combine & Layer
Pour the wet ingredients into the dry ingredients. Stir gently until just combined (a few lumps are fine!).
Spoon half the batter into the prepared loaf pan.
Sprinkle half the cinnamon apples evenly over the batter.
Top with the remaining batter, then sprinkle with the rest of the apples.
Optional: Take a butter knife and gently swirl the batter just once or twice to distribute the apples.
6. Bake to Golden Perfection
Bake for 50–60 minutes. Check at 50 minutes by inserting a toothpick into the center (avoid hitting a pocket of apple). It should come out clean or with a few moist crumbs.
If the top gets too dark, tent it loosely with foil for the last 15 minutes.
7. Glaze & Cool
Let the bread cool in the pan for 15 minutes, then lift it out using the parchment sling and place it on a wire rack.
While it cools, whisk the powdered sugar, milk, and vanilla until smooth and drizzly.
Drizzle generously over the warm (not piping hot) bread so it sets beautifully.
