Preheat Oven: Set your oven to 350°F (175°C) and line a baking sheet with parchment paper for easy cleanup.
Mix Wet Ingredients: In a medium mixing bowl, whisk together the eggs and vegetable oil until smooth.
Add Brownie Mix: Pour in the boxed brownie mix and stir until combined. The dough will be thick and sticky.
Incorporate Flour: Add the all-purpose flour and mix until no dry streaks remain. This helps create a cookie-like texture.
Optional Add-Ins: Fold in chocolate chips (or your favorite mix-ins such as walnuts, peanut butter chips, or white chocolate).
Scoop Dough: Use a tablespoon or cookie scoop to drop dough balls onto the prepared baking sheet, leaving space between each cookie to allow for spreading.
Bake: Bake for 8–10 minutes, until the edges are set but the centers remain slightly soft.
Cool: Allow cookies to cool on the pan for 2–3 minutes before transferring to a wire rack to cool completely.
