In a small saucepan, combine diced apples, granulated sugar, cinnamon, and lemon juice. Cook over medium heat for 5-7 minutes until apples are softened.

Remove from heat and let cool completely.

In a medium bowl, whisk together flour, baking soda, and salt.

In a large bowl, cream together softened butter, granulated sugar, and light brown sugar until light and fluffy.

Beat in the egg and vanilla extract until well combined.

Gradually add the dry ingredients to the wet ingredients, mixing until just combined.

Preheat oven to 375°F (190°C) and line a baking sheet with parchment paper.

Drop spoonfuls of cookie dough onto the prepared baking sheet, then flatten lightly.

Place a small spoonful of cooled apple filling in the center of each flattened cookie.

Top with another spoonful of cookie dough, gently pressing the edges to seal the filling.

Bake for 10-12 minutes, or until the edges are golden brown.

Let cool on the baking sheet for a few minutes before transferring to a wire rack to cool completely.

In a small bowl, whisk together caramel sauce and sea salt.

Once cookies are completely cool, drizzle with the salted caramel sauce.