01 -
Preheat the oven to 190°C. Line a muffin tray with paper liners or lightly grease each cup to prevent sticking.
02 -
In a large bowl, whisk together flour, granulated sugar, brown sugar, ground cinnamon, baking powder, baking soda, and salt until evenly mixed.
03 -
In a separate bowl, whisk milk, vegetable oil, eggs, and vanilla extract until smooth and homogeneous.
04 -
Pour the wet ingredients into the dry ingredients bowl. Stir gently with a spatula until just combined to preserve tenderness; avoid overmixing.
05 -
Carefully fold the peeled and finely chopped apples into the batter to distribute evenly without overworking.
06 -
Divide the batter evenly among the prepared muffin cups, filling each approximately three-quarters full.
07 -
Sprinkle the brown sugar and cinnamon mixture evenly over each muffin to create a spiced crust.
08 -
Place the muffin tray in the preheated oven and bake for 18 to 22 minutes, or until a toothpick inserted into the center comes out clean.
09 -
Allow muffins to cool in the tin for 5 minutes before transferring to a wire rack to cool completely.