Preheat the oven to 350 degrees F.
Pour the brownie mix, melted butter, water, and the egg substitute into a large bowl. Whisk until well combined.
Grease and line a brownie pan with parchment paper.
Pour the batter into the pan and bake it for 40 to 45 minutes.
Remove the brownie from the oven and take them out of the pan.
Place your brownie on a wire rack and let cool for 30 to 60 minutes before cutting.
Enjoy!