Preheat the oven to 350 degrees F (175 degrees C). Grease a 9x13-inch pan.

Combine the melted butter, sugar, cocoa powder, vanilla, eggs, flour, baking powder, and salt. Spread the batter into the prepared pan.

Bake in preheated oven for 20 to 30 minutes or until a toothpick inserted in the center comes out with crumbs, not wet. Cool on wire rack.

Allow to cool completely before decorating.

To make Spider Webs:

Melt a handful of candy melts in decorating bag in the microwave in 30 second intervals. I gently knead the candy between each interval. When candy is melted snip a small potion of the tip of the bag off. Pipe the melted candy in a spiral starting in the center of the brownie and work around until you have a spiral on the whole face of the brownie. With a toothpick start in the center and drag it horizontally across the candy spiral. Continue about 4-6 more times working all the way around the face of the brownie.

Allow candy to harden! Enjoy