Preheat the oven to 350°F.
Grease a 9 x 5 -inch loaf pan and line the bottom with a piece of parchment paper.
In the bowl of your stand mixer add brown sugar, vegetable oil, and eggs.Mix with paddle attachment until smooth.
In a separate large bowl combine the flour, baking powder, baking soda, salt, and apple pie spice. Stir together until well mixed.
Add the dry ingredients to the wet ingredients mixing gently until they are fully combined.
Fold in the chopped apple and pecans.
Pour the batter into the pan and bake for 50-55 minutes or until a toothpick inserted into the center comes out clean.
When done baking remove from the oven and let cool in the pan for 30 minutes. Then remove from the pan and cool on a wire rack.
Once the apple bread is cool make the frosting by adding the butter and packed brown sugar to a sauce pan and heating over medium heat. When it begins to bubble let cook for 2 minutes, stirring vigorously.
Add the heavy cream and continue to stir cooking for 30 seconds more.
Remove the pot from the heat and add the powdered sugar, stirring everything together until it forms a thick frosting.
Pour over the top of the apple bread and use a knife to spread it evenly. It cools quickly so be fast!