Preheat your oven to 350°F (175°C). Line a baking sheet with parchment paper if desired.

In a mixing bowl, combine the brownie mix, vegetable oil, and eggs. Stir until the mixture is well combined and smooth.

If desired, add the chocolate chips and vanilla extract to the mixture, stirring to evenly distribute.

Using a spoon, drop rounded tablespoons of cookie dough onto the prepared baking sheet, leaving space between each cookie to allow for spreading.

Bake in the preheated oven for about 10-12 minutes, or until the edges are set and the tops are slightly cracked.

Remove from the oven and let cookies cool on the baking sheet for 5 minutes before transferring them to a wire rack to cool completely.

For added flavor, you can mix in nuts or additional candies to the dough.

Store any leftover cookies in an airtight container to keep them fresh for several days.

Feel free to experiment with different brownie mix flavors for a unique twist!