Start by preheating your oven to 350°F (175°C). This ensures a consistent baking environment for your cookies.
Line your baking sheets with parchment paper. This will prevent the cookies from sticking and make cleanup a breeze.
In a large mixing bowl, combine the 18 ounces of brownie mix with the 2 large eggs and the melted ½ cup of unsalted butter. Use a whisk or spatula to mix until well combined. You want a thick, fudgy batter.
Chop the 12 soft caramel squares into smaller pieces. Gently fold them into the brownie batter, ensuring they are evenly distributed.
Using a cookie scoop or tablespoon, drop generous amounts of the batter onto the prepared baking sheets, spacing them about 2 inches apart.
Before baking, sprinkle a little coarse sea salt on top of each cookie. This step is crucial for that perfect sweet and salty combination.
Place the baking sheets in the preheated oven and bake for 10-12 minutes. The edges should be set, but the centers will look slightly underbaked. This ensures a chewy texture.
Once baked, remove the cookies from the oven and allow them to cool on the baking sheets for a few minutes before transferring them to a wire rack. Let them cool completely before indulging.