Preheat the oven to 350ºF. Line a 9x5-inch loaf pan with parchment paper, grease the parchment paper with cooking spray.

In a small bowl, combine light brown sugar and cinnamon for the cinnamon-sugar mixture. Set aside.

In a medium bowl, mix together the flour, salt, baking powder, 1 teaspoon cinnamon, and baking soda. Set aside.

In another small bowl, combine the diced apples with 2 tablespoons sugar and 1 teaspoon ground cinnamon. Set aside.

In a large mixing bowl, beat together the butter and sugar until light and fluffy. Add in eggs, one at a time, and vanilla.

Mix in the flour mixture 1/3 at a time, alternating with buttermilk, until smooth and just combined.

Pour half of the batter into the prepared pan. Add half the apple mixture and generously sprinkle with half of the cinnamon sugar. Add remaining butter*, followed by the apples and cinnamon mixture. * It’s important to fill the pan about 3/4 of the way. You may have extra batter.

Bake for 50-65 minutes until a toothpick inserted comes out clean or with a few crumbs attached.

Remove the loaf from the oven and allow to cool for 15 minutes in the pan. Transfer to a cooling rack to cool before glazing.

To make the glaze, combine the powdered sugar, milk/heavy cream and cinnamon and whisk together until desired consistency. Drizzle over loaf. Slice and serve.