The premixed brownies are too sweet for me, that's why I find ways how to improve the taste. This time I added one cup of whole wheat flour, additional water and oil to the original instruction from the box. For final addition, two mashed bananas :)
Preheat the oven to 180 ̊C(350 ̊F). Scoop the batter and place on the prepared baking sheet and bake for 10-12 minutes. Transfer the brownies to wire rocks for cool completely.
Here it is, chewy and chocolaty plus the banana flavor!
Ready for potluck, enjoy!