Salted Caramel Brownies

Another recipe to add to my sweet and salty recipes - Salted Caramel Brownies - but I won't get to enjoy these sweet and salty treats, because they're for a bakesale at Jeff's office in aid of Children in Need, BBC UK's corporate charity that has it's largest fundraising evening on Friday across the UK. So, hopefully these brownies will raise a few pounds to go to a good cause.

Source: MyRecipes
Ingredients
Brownies:
3/4 C. all-purpose flour
1 cup granulated sugar
3/4 cup unsweetened cocoa
1/2 cup packed brown sugar
1/2 teaspoon baking powder
6 tablespoons (85g) butter, melted
2 large eggs
1 teaspoon vanilla extract
Cooking spray
Topping:
1/4 (57g) cup butter
1/4 cup packed brown sugar
3 1/2 tablespoons evaporated fat-free milk, divided
1/4 teaspoon vanilla extract
1/2 cup powdered sugar
1 ounce bittersweet chocolate, coarsely chopped
1/8 teaspoon coarse sea salt

Preparation

1. Preheat oven to 350°.
2. To prepare brownies, weigh or lightly spoon flour into dry measuring cups; level with a knife. Combine flour and next 4 ingredients (through baking powder) in a large bowl, stirring well with a whisk. Combine 6 tablespoons butter, eggs, and 1 teaspoon vanilla. Add butter mixture to flour mixture; stir to combine. Scrape batter into a 9-inch square metal baking pan lightly coated with cooking spray. Bake at 350° for 19 minutes or until a wooden pick inserted in center comes out with moist crumbs clinging. Cool in pan on a wire rack.
3. To prepare topping, melt 1/4 cup butter in a saucepan over medium heat. Add 1/4 cup brown sugar and 1 1/2 tablespoons milk; cook 2 minutes. Remove from heat. Add vanilla and powdered sugar; stir with a whisk until smooth. Spread mixture evenly over cooled brownies. Let stand 20 minutes or until set.
4. Combine 2 tablespoons milk and chocolate in a microwave-safe bowl; microwave at HIGH for 45 seconds or until melted, stirring after 20 seconds. Stir just until smooth; drizzle over caramel. Sprinkle with sea salt; let stand until set. Cut into squares.