How to Make Homemade Oat Flour

Lately, we've had an increase in people close to us who have developed a gluten sensitivity and that's left me (a.k.a. the friend/family member who loves to bake...a lot.) looking for flour substitutions that don't break the bank. So, before a few of my upcoming posts are published you all should meet my new friend, oat flour! Oat flour is made from ground rolled oats and is naturally gluten-free (gluten is only a component of wheat).

It's truly become one of my new favorite things. It's proving to be a great substitution for all-purpose flour to create all (or most) of our favorite baked goodies, and I think it's got a wonderful flavor with a very subtle bit of texture. I've been experimenting with oat flour a bunch this week and so far, I've made some spiced mug cakes (I'm now permanently addicted to oat flour mug cakes...just f.y.i!), brownies and an apple snack cake with it and everything baked up without a hitch! 

It's also inexpensive and super easy to make it at home.  All you need is a good blender or food processor and a sieve. If you've ever explored the alternative flour section at your supermarket, you know how much those small packages can cost ( yeah buddy, we're talking $$$$$). Taking on easy prep jobs, like this one, by yourself will definitely keep your piggy bank from squealing in agony.

Personally, I prefer to use my blender over my food processor for jobs involving small batches of pretty much anything. In my opinion, a blender is a bit more effective for small quantities that need pureeing or grinding. Those big blades in a food processor can miss a lot when it's bowl is not full.

Oat flour is also really healthy and I think everyone can feel good about that. Whole oats have been studied extensively and are attributed with health benefits that include lowering "bad" cholesterol, increasing the hormones that control the appetite, lowering blood pressure and a few others that are outlined on this page on the Whole Grain Council's website.  Those amazing, healthful properties are present to some degree in oat flour too. 

Even if you don't have issues with gluten, using oat flour to make some of your baked goods is well worth a try, in my opinion. There are a few recipes out there for baking with oat flour, but if you're looking for suggestions I've a got a few posts using this tasty stuff coming up for Little Fish soon. Stay tuned my friends and have a lovely weekend! xoxo

yield: 2 cupsprint recipe

Homemade Oat Flour

prep time: 2 MINScook time: 2 MINStotal time: 4 mins


  • 2 cups old-fashioned oats
Special Equipment
  • quality blender or food processor
  • sifter or standard handheld sieve


  1. Place oats in blender and grind/pulse until oats are good and powdery. Should take just a couple of quick pulses.
  2. Press the ground oats through a sifter or standard sieve to eliminate any large pieces that are left.
  3. If you need more than 2 cups, repeat process until you have the quantity you need. Store in an airtight container or mason jar until you are ready to use them.
Created using The Recipes Generator


  1. This is much better than my method of making oatflour. I needed just a little once so I dumped a large cartoon of Quaker Oats into a sieve. Anything that shook out the bottom I called oat flour! GREG

  2. Easy peasy! Thanks for sharing, Marcelle, and have a great weekend!

  3. very helpful, marcelle! i can think of lots of places to use this!

  4. Wow, it has never occurred to me to make my own oat flour. This is great! Thank you for sharing, it will definitely be on my radar.


  5. What a neat recipe! We do have friends who can't tolerate gluten, so I'm always looking for ideas that I can use when baking for them. Never thought to make my own oat flour -- this is so handy. Thanks!

  6. What a great idea, Marcelle- and so many ways to use it! Believe it or not, I'm here in Texas with you! Well, not with you, but at least closer than usual… I'm in Austin for two days for some meetings, heading back to Tucson tonight.

    1. David, I'm sorry I missed you! You were really close by, Austin is only a 45 minute drive from me! Message me if you make it to this neck of the woods again. :)

  7. Dear Marcelle, I love oatmeal flour and I make it all the time - I have been expermenting a lot with it lately too! Thank you for reminding us how delicious and healthy it is!


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