We do not recommend using cucumber in this recipe. Your brownies would be very soggy.
Are zucchini brownies healthy?
Using zucchini adds some vitamins and fiber. It is still, however, a calorie-rich, sweet dessert. See the nutrition label below for more details.
Do I need to peel zucchini before grating them?
There is no need to peel the zucchini before grating them. The skin on a medium zucchini is thin enough to eat, so peeling does not change the taste or texture either way.

