01 -
Preheat oven to 175°C. Line a 23x33 cm (9x13-inch) baking dish with parchment paper, allowing an overhang on the sides, then lightly grease it.
02 -
In a large mixing bowl, whisk together the melted butter, granulated sugar, and brown sugar until the mixture is smooth and well combined. Incorporate the eggs one at a time, whisking thoroughly after each addition. Stir in the vanilla extract.
03 -
In a separate bowl, sift together the cocoa powder, all-purpose flour, baking powder, and salt to remove any lumps.
04 -
Gradually add the sifted dry ingredients to the wet mixture, stirring gently until just combined. Be careful not to overmix the batter. If using, fold in the semi-sweet chocolate chips.
05 -
Pour half of the prepared brownie batter into the lined baking dish and spread it evenly across the bottom.
06 -
Carefully arrange the Halloween or classic Oreos in a single, even layer over the brownie batter.
07 -
Gently spread the remaining brownie batter over the layer of Oreos, ensuring they are completely covered. Smooth the surface with a spatula.
08 -
Bake for 35 to 40 minutes, or until a toothpick inserted into the center of the brownies comes out with only a few moist crumbs attached, indicating a fudgy texture.
09 -
Remove the baking dish from the oven and allow the brownies to cool completely in the pan on a wire rack before proceeding with decoration.
10 -
Melt the white chocolate or candy melts in a microwave-safe bowl in 30-second intervals, stirring after each, until smooth and fluid. Divide the melted chocolate into separate small bowls and tint one with orange food coloring and another with purple food coloring.
11 -
Drizzle the colored melted chocolate over the cooled brownies in a playful, spooky pattern. While the chocolate is still wet, generously sprinkle with Halloween sprinkles and strategically place candy eyeballs, if using.
12 -
Allow the chocolate topping to set and harden for 20 to 30 minutes at room temperature before slicing.
13 -
Use the parchment paper overhang to carefully lift the cooled and decorated brownie slab from the baking pan. With a sharp knife, cut the brownies into 16 uniform squares, wiping the knife clean between each cut for neat edges.
14 -
Present the Spooky Oreo Layered Halloween Brownies and enjoy this festive treat.