Line a 8.5 x .4.5inch loaf pan with parchment paper. You can also use a 9x5 inch pan for slighter less high loaf.
Core and chop the apples into chunks, around 1/2 an inch in size. You can peel them, but I like them unpeeled. Add the apples to a bowl with cinnamon and sugar. Toss to coat and set aside.
Whisk the spices, salt, baking powder, baking soda, and flour in a small bowl. Set aside
Mix the melted butter, oil, sugars, sour cream, vanilla, and eggs in a large mixing bowl.
Fold through the dry ingredients, followed by the chopped apple pieces. The apple bread batter will be very thick.
Spoon into the prepared pan and bake for around 60-70 minutes until a skewer inserted into the center of the bread comes out clean. Let the apple bread cool in the pan for 15 minutes before removing it and allowing it to cool further on a wire rack.
When the apple bread has cooled to room temperature. mix together powdered sugar, cinnamon, and just enough milk to create a smooth and pourable paste. Drizzle this over the bread.
Notes
Use the toggle to convert the metric to cups. Cup sizes are in US size cups which are smaller than metric cups. Use scales to measure in grams for the best and most consistent results.