Preheat the oven to 350°F and spray a 9x5 loaf pan with non-stick cooking spray or line with parchment paper, and set aside.
In a medium mixing bowl, toss together the chopped apples with the brown sugar and cinnamon to coat, set aside.
Ina separate bowl, whisk or sift together the flour, apple pie spice, baking powder, and baking soda. Set aside.
In the bowl of a stand mixer fitted with the paddle attachment or a medium bowl using a an electric of a hand mixer, cream the butter and sugar on medium speed until well combined, about 2 minutes.
Add the eggs one at a time, mixing gently on low speed.
Add in the dry ingredients and mix using a rubber spatula
Slowly pour in the milk and vanilla extract and combine gently until the batter is creamy, about 1 minute.
Pour half of the completed batter into the bottom of your loaf pan, then pour half of the prepared apple mixture.
Repeat layers ending with the other half of the apple mixture. Swirl in a figure-eight pattern; I found using a butter knife works best for this. Then, tap the pan to settle.
Place the bread into the oven for one hour or until a toothpick comes out clean from the center of the loaf.
Let the bread cool for one hour and then drizzle with the powdered sugar icing. Slice using a serrated knife.
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