Preheat the oven to 375 degrees Fahrenheit and line two large baking sheets with parchment paper.
Whisk together the brownie mix and cocoa powder in a medium-sized mixing bowl until combined.
18.3 ounces box brownie mix, ⅓ cup cocoa powder
Mix in the eggs and salted butter and stir until combined and smooth. This may take several minutes as the mixture starts looking too dry, but it will come together into a thick dough after it is well mixed.
2 large eggs, ¼ cup (½ stick) salted butter
Fold in the chocolate chips and then use a 1 ½ Tablespoon cookie scoop to scoop out cookies and place them on the prepared baking sheets.
1½ cups semi-sweet chocolate chips
Flatten each cookie slightly with your palm or the bottom of a clean glass to have thick discs instead of balls.
Bake for 9-13 minutes or until crinkly set on the edges.
Allow 5-10 minutes before moving to a cooling rack to cool completely or serve warm.
Notes
Storage:
To Store: You can store Brownie Mix Cookies in an airtight container for up to 3-4 days at room temperature or in the refrigerator for about a week.
To Freeze: You can freeze these cookies in a freezer safe container or bag for 2-3 months.
To Reheat: Reheat in the oven until warm.
Tips:
Note:This recipe was developed using the brand listed in the ingredients. Different brands of brownie mix should work, but the results may vary.
You will only be using the dry mix, not preparing the brownies according to the box.
If necessary, vegetable oil can also be used as a substitute for the butter. It may affect the cookie dough's texture and the cookies' final thickness.
Let the cookies cool on the baking sheet for about 5 minutes before moving them to a wire cooling rack. This will help ensure they don’t break apart when you try to move them.
You can use a cookie scoop to scoop the cookie dough onto the baking sheet. This will ensure that all of the cookies are uniform in size and will help them bake evenly.
I recommend warming these cookies before serving, or they may be cold and dry in the mouth.
Thaw your frozen cookies to room temperature or reheat them in the oven for a few minutes to regain their texture and flavor.