Lightly grease a mini cupcake pan with cooking spray.
In a medium mixing bowl add the brownie mix, eggs, water and oil and stir slowly and carefully so as not to overmix.
Spoon the brownie batter into each tiny well, filling only about ⅔ full.
Put the baking pan straight into the oven and bake for 10 minutes only.
Remove and allow to cool completely in the cupcake pan.
Notes
I love to whip these together when my kids have friends over. They're usually so impressed and assume they're made from scratch. I try to go for the fudgy brownie mix.