Pre-heat oven to 325 degrees and grease a 9 X 5 loaf pan.
In a medium bowl, mix together dry ingredients: flour, cinnamon, nutmeg, baking soda, baking powder, and salt.
In a large bowl, whisk together egg, butter, vanilla extract, and maple syrup.
Slowly incorporate dry ingredients to wet and mix until just combined.
Gently fold in apples and walnuts.
Bake for 50-60 minutes.
Remove from oven and let cool for a couple of minutes, remove from pan and let complete cool on cooling rack.
Make maple glaze and generously drizzle over bread. Let set, slice, and enjoy!