How to Make Homemade Oat Flour

Have you ever wondered How to Make Homemade Oat Flour at home?  It’s so incredibly easy, I show you how with just one ingredient and my favorite kitchen appliance. Perfect for Oatmeal cookies, pancakes and more!

Easy to make Homemade Oat Flour in a blue and white bowl from

I just got back from a whirlwind business trip to San Francisco and I got to hang out with alllll my blogging besties, as well as, make a few more blogging besties. I even got to stay an extra day to do some exploring thanks to the crazy winter storm the snuck up on the east coast while I was there. I did allllll the eating and drank all the wine in California so I’m glad to be back so I can start to get myself back to a regular routine….if you know what I’m saying. It was a ton of fun, I’ll try to do a recap post by the end of the week. It was an amazing trip and I was so sad to leave.  AND we have more snow coming in a couple days so it looks like I may have a ton of time to write, cook, eat and write some more. But now….I give you a recipe I’ve been sitting on for a few weeks because it’s embarrassingly easy to make and it’s not that pretty to look at but I absolutely LOVE having this in my pantry at all times. Homemade Oat Flour will soon be your new favorite, too.

Easy to make Homemade Oat Flour in a blue and white bowl from

If you ever bought Oat Flour at the store you already know it’s on the spendy side but it’s so much better for you than regular wheat flour and, if you buy a certified gluten-free oat product, you now have homemade gluten free flour. If you ever wanted to know How to Make Homemade Oat Flour at home, you are in luck because it takes about 5-10 minutes….tops and it’s a great substitute for regular flour in so many of my recipes.

Easy to make Homemade Oat Flour in a food processor bowl from

This Homemade Oat Flour recipe starts with just 2 cups of either regular old fashioned oats or instant oats.  I tried to make it with steel cut oats but it ended up being pretty course and more like a cornmeal than flour so I suggest just sticking with old fashioned or instant. Place the oats in your food processor and process until powdery… flour.

Oat Flour in the food processor bowl from

You’ll still have a few grainy pieces and that’s totally cool…you can either sift them out or leave them in.  I think they add a nice nutty texture to baked goods but if smooth is where you’re heading a quick sifting will lift them right out.

Sifted Homemade Oat Flour in a blue bowl from

Store your Homemade Oat Flour in an airtight container at room temperature (your pantry works well for this) until ready to use. I love to sub out the regular flour in these Oatmeal Raisin Cookies for an extra oat-y cookie or you can nix the regular flour in this pancake mix with your homemade oat flour for quick weekday Oat Pancakes! Your kids won’t even know you made the switch! And if you decide to try this recipe be sure to post a pic over on Instagram….tag @thesuburbansoapbox….and I may share on my Instastories!!!

Homemade Oat Flour made in a food processor displayed in a blue bowl from

How to Make Homemade Oat Flour |

How to Make Homemade Oat Flour

Course: Healthy
Cuisine: American
Keyword: gluten free, oat flour
Prep Time: 10 minutes
Total Time: 10 minutes
Servings: 8
Calories: 134 kcal
Author: Kellie Hemmerly from The Suburban Soapbox
Super easy Homemade Oat Flour made from scratch in minutes!


  • 3 1/2 cups Old Fashioned Oats or Quick Cooking Oats


  1. Add the oats to the bowl of a food processor and blend until powdery, approximately 4-5 minutes.
  2. If desired, sift the oat flour through a fine mesh sieve into a large bowl to remove the larger oat pieces.
  3. Transfer the oat flour to an airtight container until ready to use. 

Recipe Notes

For best results, use a high powered blender or food processor with a sharp blade.

Nutrition Facts
How to Make Homemade Oat Flour
Amount Per Serving
Calories 134 Calories from Fat 18
% Daily Value*
Fat 2g3%
Saturated Fat 0g0%
Cholesterol 0mg0%
Sodium 2mg0%
Potassium 128mg4%
Carbohydrates 23g8%
Fiber 3g13%
Sugar 0g0%
Protein 4g8%
Calcium 18mg2%
Iron 1.5mg8%
* Percent Daily Values are based on a 2000 calorie diet.


4 comments on “How to Make Homemade Oat Flour”

  1. Is oat bran different than oat flour?  I use oat bran to make blueberry muffins and I can’t help but
    wonder if I can use oat flour instead?
    Thanks for all the wonderful recipes.

  2. Oh my, thank you so much for this healthy flour.  Must make.  

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