Preheat your oven to 350°F (175°C). Grease a loaf pan or line it with parchment paper for easy removal.

In a medium bowl, whisk together the flour, baking soda, baking powder, cinnamon, nutmeg, and salt. Set aside.

In a large bowl, beat together the softened butter and sugar until light and fluffy, about 2-3 minutes.

Mix in the eggs, one at a time, ensuring they are fully incorporated before adding the next. Then stir in the vanilla extract.

Gradually add the dry ingredient mixture to the wet ingredients, mixing just until combined. Do not overmix!

Gently fold in the diced apples and nuts (if using) until evenly distributed throughout the batter.

Pour the batter into the prepared loaf pan and smooth the top.

Bake for 50-60 minutes or until a toothpick inserted into the center comes out clean.

Once baked, remove the bread from the oven and allow it to cool in the pan for 10 minutes before transferring it to a wire rack to cool completely.