01 -
Grease an 20 x 10 cm loaf pan thoroughly and line with parchment paper, leaving a 5 cm overhang on each side for easy removal.
02 -
Combine diced apple, brown sugar, and cinnamon in a medium bowl. Allow to macerate for 15 minutes until juices appear and apples are coated.
03 -
In a separate bowl, sift together flour, baking powder, and salt, ensuring no lumps remain.
04 -
In a large bowl, beat granulated sugar and softened butter until light and fluffy, aerating the mixture for optimal crumb texture.
05 -
Add eggs one at a time to the creamed mixture, mixing well after each addition. Blend in milk and vanilla extract until smooth and cohesive.
06 -
Gently fold the dry ingredient mixture into the wet base using a spatula, mixing only until unified; avoid overmixing to maintain a tender crumb.
07 -
Spread half the batter into the prepared pan. Top with half the apple mixture. Add remaining batter, then finish with the rest of the apples. Use a table knife to gently swirl the apple mixture through the batter, creating visible ribbons.
08 -
Bake in a preheated oven at 175°C for approximately 60 minutes, or until the loaf is golden and a toothpick inserted into the center emerges clean.
09 -
Cool the bread in the pan for 10 minutes, then lift to a wire rack to cool completely. For the glaze, whisk sour cream, powdered sugar, vanilla, and just enough milk to create a smooth, pourable consistency. Drizzle evenly over the cooled loaf.