Ingredients
Equipment
Method
Prep
- Preheat oven to 350F. Line two baking sheets with parchment paper or silicone mats.
Make dough
- In a large bowl, stir together brownie mix and flour. Add oil, eggs, and vanilla. Mix with a wooden spoon or electric mixer on low until a thick dough forms, about 1 minute. It will be stiffer than brownie batter. Fold in chocolate chips if using.
Scoop and bake
- Scoop rounded tablespoons of dough and roll into balls. Place 2 inches apart on prepared sheets. Do not flatten.
- Bake 9-11 minutes, until tops look set and crackly but centers are still slightly soft. They will look underdone - this is correct.
Cool and finish
- Let cookies rest on the hot pan for 5 minutes to finish setting, then transfer to a wire rack. Sprinkle with flaky salt while warm if desired.
Notes
The added flour is crucial - without it, these spread into thin puddles. For extra chewy cookies, chill the dough 30 minutes before baking. These keep well in an airtight container for 5 days, or freeze baked cookies up to 3 months. Try swapping chocolate chips for chopped walnuts, peppermint bark, or peanut butter chips.
