– Remove the brownie mix from the box and pour into a large mixing bowl. Mske a well at the middle and add the egg,oil, and water.
– Mix using a spatula until there are no lumps. Transfer the batter in the prepared pan and level the batter. Tap the pan in a flat surface to remove bubbles. Bake for eigtheen to twenty minutes. Check by doing the tootpick test. Poke the toothpick at the middle and if it comes out clean, it is done.