Preheat the oven to 375°F. Line a couple baking trays with parchment paper or silicone baking mats and set aside. In a large bowl, fold together the brownie mix, flour, vegetable oil and eggs. The batter will be very thick. If you need to, add more oil 1 tbsp at a time until the batter has no more dry streaks. Fold in mix in's of choice (for this batch, I just used chocolate chips).

Scoop into even sized balls and roll. For half of this batch, I rolled the balls in sprinkles before baking. Place them on the pan a few inches apart. Bake for 8-10 minutes, until the bottom and outer edges are just set. Let them cool a few minutes before serving.