Preheat your oven to 375℉ and lightly coat a 9x5-inch loaf pan with baking spray. Set aside.
In a large bowl, combine the brown sugar, maple syrup, yogurt, apple sauce, oil, egg.
Stir in the rolled oats. Let the oats soak and soften slightly for 10 minutes.
In a separate bowl, whisk together the all-purpose flour, whole wheat flour, baking powder, baking soda, cinnamon and salt.
After the oats have softened slightly, carefully add the wet ingredients to the dry ingredients. Mix until just combined. Then, gently fold in the chopped apples and pecans (if using), being careful not to over-mix. The batter will look and feel very thick.
Pour the batter into your prepared loaf pan. with the back of a rubber spatula, smooth out the top of the loaf so that it is mostly flat. Sprinkle the top with rolled oats, if desired.
Bake for 40 minutes or until toothpick inserted into the center comes out clean. If the top starts to brown too quickly, tent with foil.
Remove from the oven and allow the loaf to cool slightly (inside the loaf pan) before turning out on a wire rack to cool completely.