In a large mixing bowl, beat together softened unsalted butter, granulated sugar, and brown sugar until fluffy, approximately 3-5 minutes.

Add vanilla extract and egg, mixing until well combined.

In a separate bowl, whisk together flour, baking soda, salt, cinnamon, and nutmeg.

Gradually add the dry mixture into the wet ingredients, stirring gently until just blended.

Fold in diced apples, ensuring they distribute evenly throughout the dough.

Cover the bowl tightly with plastic wrap and refrigerate the dough for 30-60 minutes.

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

Drop rounded balls of dough onto the prepared baking sheets, spacing them about 2 inches apart.

Bake for 10-12 minutes, or until edges are lightly golden and centers remain soft.

Allow to cool on the baking sheets for about 5 minutes before transferring to a wire rack. Drizzle with salted caramel and sprinkle with flaky sea salt.