350°F (175°C). Grease and line a 9×5-inch loaf pan.
Pour half of the batter into the pan. Spoon the apple-cinnamon mixture evenly on top. Spread the remaining batter over the apples. Use a knife to gently swirl the filling through the batter.
Step 4: Bake
Bake for 45–55 minutes, or until a toothpick inserted in the center comes out clean. Let cool in the pan for 10 minutes, then transfer to a wire rack.
Step 5: Add the Glaze
In a small bowl, whisk powdered sugar, milk,
