I had more zucchini than banana, so the bread is more of a standard zucchini bread, with just a bit of banana as a background flavor. From the recipe card, you can see the original measure of zucchini is 2 cups. I swapped out 1/2 cup for banana in this new recipe. Both resulting breads are wonderful. I was pleasantly surprised how much I enjoyed the addition of banana. Use what you have to equal a 2-cup measure.