Yes! Use your favorite all-purpose gluten-free flour. Please note that if your gluten-free flour does not contain xantham gum, you may find that your pizza in a mug does not rise as well. For the best taste and texture, we recommend using a 1:1 all-purpose gluten-free flour like Bob’s Red Mill. As with all gluten-free cooking, be sure to check your labels to make sure all the other ingredients are gluten-free as well (some marinaras are not).