Preheat your oven to 350°F (175°C) and grease or line a 9-inch square baking pan with parchment paper.

In a large mixing bowl, combine your brownie mix with the eggs, water, and oil. Stir until smooth and pour into the pan.

Bake for approximately 25 minutes, then cool in the pan for 10-15 minutes before transferring to a wire rack.

Once cool, spread a generous layer of purple frosting over the brownies.

Place the Peep Ghosts evenly across the frosted surface.

Sprinkle Halloween-themed sprinkles and candy eyeballs over the ghosts and frosting.

Cut the brownies into squares and serve on a festive platter.