How to make zucchini flour! Zucchini flour is a gluten-free flour made from dried and ground zucchini. To make it, you would grate zucchini, squeeze out the excess moisture, and then dehydrate it before grinding it into a fine powder. This flour can be used in a similar way as all-purpose flour, but it may require additional binding agents in some recipes due to its lack of gluten. Zucchini flour is not very popular yet, but it is gaining popularity as a healthier alternative to traditional flou