Oat flour is a flour made from ground hulled oats. It can be store-bought or homemade. To make oat flour at home, oats can be ground in a blender or food processor and then sieved to achieve a uniformly fine consistency. Whole, steel-cut, and rolled oats can all be used to make oat flour.
Oat flour can be used to make some foods like pancakes and cookies. If made from uncontaminated oats, oat flour is gluten-free and can be used in gluten-free baking. However, it does not have the same properties as wheat flour, and this can affect the taste and texture of baked goods.