Salted Caramel Brownies

These flaky caramel brownies, sprinkled with sea salt, with a rich, refined taste, will undoubtedly appeal to the public.
Preheat the oven to 350 degrees.To make brownies, weigh or lightly spoon the flour into dry measuring cups; smooth with a knife. Combine the flour and the following 4 ingredients (with the addition of baking powder) in a large bowl, mixing well with a whisk. Combine 6 tablespoons of butter, eggs, and 1 teaspoon of vanilla. Add the butter mixture to the flour mixture; mix until smooth. Place the dough in a 9-inch square metal baking dish, lightly greased with cooking spray. Bake at 350 ° C for 19 minutes or until a wooden stick inserted in the middle comes out with wet crumbs sticking to it. Cool in the pan on a wire rack.To make the filling, melt 1/4 cup butter in a saucepan over medium-high heat. Add 1/4 cup brown sugar and 1 1/2 tablespoons milk; cook for 2 minutes. Remove from heat. Add vanilla and powdered sugar; whisk to combine until smooth. Spread the mixture evenly over the cooled brownies. Let stand for 20 minutes or until set.Combine 2 tablespoons each of milk and chocolate in a microwave-safe bowl; cook in the microwave on high power for 45 seconds or until the chocolate melts, stirring after 20 seconds. Stir until smooth; drizzle with caramel. Sprinkle with sea salt; let stand until set. Cut into small squares.