Preheat your oven to 350°F (175°C).
In a bowl, whisk together the flour, baking soda, and salt.
In a separate bowl, cream together the softened butter, granulated sugar, and brown sugar until light and fluffy.
Add in the egg and vanilla extract, mixing until incorporated.
Beat in the softened cream cheese until the mixture is smooth and fully combined.
Gradually add the dry ingredients into the wet mixture, mixing just until combined.
Fold in the salted caramel sauce gently using a spatula.
Using a tablespoon, scoop the dough onto a parchment-lined baking sheet, spacing them about 2 inches apart.
Sprinkle each cookie with a pinch of sea salt flakes before baking.
Bake for 12-15 minutes or until the edges start to turn a light golden brown.
Allow the cookies to cool on the baking sheet for 5 minutes before transferring them to a wire rack.