01 -
Preheat oven to 350°F. Grease and line a 9x13-inch baking pan with parchment paper.
02 -
In a large bowl, whisk melted butter and sugar until glossy. Add eggs one at a time, beating well after each addition, then stir in vanilla extract.
03 -
In a separate bowl, whisk together flour, cocoa powder, salt, and baking powder.
04 -
Gradually fold the dry mixture into the wet mixture until just combined to preserve fudgy texture.
05 -
Pour half of the batter into the prepared pan. Drizzle half of the caramel sauce over it. Add remaining batter and smooth the top. Swirl remaining caramel on top with a butter knife.
06 -
Bake in the center of the oven for 28 to 32 minutes or until a toothpick inserted near the center comes out with a few moist crumbs. Cool completely on a wire rack.
07 -
Cut brownies into squares. Place a large marshmallow on each square, securing with a dab of caramel if needed.
08 -
Using a kitchen torch or broiler, toast marshmallows until puffed and lightly golden, about 10 to 20 seconds.
09 -
Press two mini chocolate chips into each marshmallow to form eyes. Dust with powdered sugar and drizzle extra caramel sauce over the brownies for a spooky finish.