Oat Flour (Best Option)
1:1 by volumeOat flour works well as a substitute because it has a similar starch content to all-purpose flour, which helps thicken the smoothie without clumping. Its fine grind allows it to blend smoothly, maintaining the desired consistency.
To ensure the best results, use finely ground oat flour and blend thoroughly to avoid any residual grittiness. It is also naturally gluten-free if certified, making it suitable for gluten-sensitive individuals.
Compared to all-purpose flour, oat flour imparts a slightly sweeter, nuttier flavor and a creamier texture, enhancing the smoothie without overpowering other ingredients.