Preheat the Oven: Preheat your oven to 350°F (175°C) and line a 9×13-inch baking pan with parchment paper.

Make the Brownie Batter: In a microwave-safe bowl or on the stovetop, melt the butter until fully melted. In a large mixing bowl, whisk together the melted butter and sugar until combined. Add the eggs, one at a time, mixing well after each addition. Stir in the vanilla extract.

Combine Dry Ingredients: In a separate bowl, sift together the flour, cocoa powder, and salt. Gradually add the dry ingredients to the wet ingredients, mixing until just combined.

Prepare the Pan: Pour the brownie batter into the prepared baking pan.

Add the Caramel Swirl: Drizzle the caramel sauce over the top of the brownie batter. Use a knife to gently swirl the caramel into the brownie batter.

Sprinkle Sea Salt: Sprinkle sea salt flakes over the top of the batter for that sweet-salty contrast.

Bake: Bake for 25–30 minutes or until a toothpick inserted into the center comes out with a few moist crumbs.

Cool and Serve: Allow the brownies to cool completely in the pan before cutting into squares. Serve warm with a scoop of vanilla ice cream, extra caramel drizzle, or nuts if desired.