I started baking bread in 1970, and, when my friend Charlie Van Over developed what I still believe is the best food processor method there is, I adopted that and never looked back. (markbittman.com)
And I'm glad the food processor method works! (acouplecooks.com)
1 2/3 cup old - fashioned oats processed for a few seconds + 1/3 cup old - fashioned oats processed to a fine powder — old - fashioned oats / food processor method (dulanotes.com)