Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.

In a large mixing bowl, cream together the softened unsalted butter, granulated sugar, and brown sugar until light and fluffy (about 2-3 minutes).

Add the egg and vanilla extract, mixing until well combined (about 1-2 minutes).

In another bowl, whisk together the all-purpose flour, baking soda, baking powder, ground cinnamon, ground nutmeg, and salt.

Gradually add the dry mixture to the wet ingredients, stirring gently until just combined.

Fold in the finely chopped apples and any optional ingredients like nuts or raisins.

Using a tablespoon, scoop rounded portions of dough onto the prepared baking sheet, spacing them about 2 inches apart.

Bake in the preheated oven for 10-12 minutes until the edges are golden brown and the cookies are set in the center.

Allow cookies to cool on the baking sheet for about 5 minutes, then transfer to a wire rack to cool completely.