01 -
Preheat the oven to 350°F. Grease an 8x8-inch baking pan and line it with parchment paper.
02 -
In a mixing bowl, whisk together melted butter and granulated sugar until smooth.
03 -
Add eggs and vanilla extract to the mixture, whisking until fully combined.
04 -
Sift in cocoa powder, all-purpose flour, salt, and baking powder. Stir gently until the batter is just combined.
05 -
Fold in semi-sweet chocolate chips if using, ensuring even distribution throughout the batter.
06 -
Pour the batter into the prepared baking pan and spread evenly. Bake for 20 to 25 minutes or until a toothpick inserted in the center comes out with moist crumbs.
07 -
Allow the brownies to cool completely before cutting into squares.
08 -
Pipe a spiral using white decorating icing on each brownie square. Drag a toothpick from the center outward to create a spiderweb effect. Optionally, add small candy spiders for added decoration.