Preheat your oven to 350°F (175°C). Line a baking pan with parchment paper and prepare the brownie batter according to your mix's instructions, mixing in the eggs and oil until smooth and glossy.
Pour the batter into the prepared pan, spreading it evenly with a spatula to ensure a smooth surface. Bake for about 25-30 minutes, until the top is set and a toothpick inserted in the center comes out with moist crumbs.
Once baked, remove the pan from the oven and let the brownies cool completely on a wire rack. This helps the texture settle and makes slicing easier.
Carefully lift the cooled brownies out of the pan and slice into individual squares. Transfer the pieces onto a serving tray or plate.
Using a piping bag or plastic sandwich bag with the corner snipped, pipe generous dollops of whipped topping onto each brownie to create ghostly shapes, making sure to form rounded heads and draping bodies.
Melt the dark chocolate gently in a microwave or over a double boiler until smooth and glossy. Carefully dip small marshmallows into the melted chocolate to make cute, shiny eyes, then place them on the whipped topping ghosts.
Using a small torch or kitchen lighter, briefly brown the marshmallow eyes until golden and slightly sticky, or leave them plain if preferred.
If desired, sprinkle edible glitter over the ghosts for a shimmering, ghostly glow, enhancing their spooky appearance.
Arrange the ghost brownies on a serving platter and add extra decorative touches if desired, like tiny marshmallow noses or more whipped topping for a full spectral effect.
Serve your spooky ghost brownies at your Halloween party or enjoy them as a fun, festive treat for the whole family!
