Fill your food processor or blender between 1/4 and 1/2 full of oats.
2 cups Rolled or quick oats
Begin grinding the oats and continue until they turn into a fine powder.
If necessary, scrape down the sides of your food processor or blender every so often.
You can use your oat flour right away or store in an airtight container for later.
Notes
If you need your oat flour to be gluten-free, make sure to use certified gluten-free oats.
Oat flour made from fresh oats will keep for 2-3 months in an airtight container at room temperature. It can also be refrigerated for up to a year or frozen for 18 months.