How To Make Your Own Oat Flour

Today I’m talking about homemade oat flour. Why make it yourself when you can just buy it at the store? Knowing how to make your own oat flour will not only save you money, it will help you whip up the fluffiest, most flavorful breads and muffins you’ve ever concocted. All you need is two minutes and some rolled oats, and you’re in business. 

Ready to give it a try? Let’s go!

Food processor making homemade oat flour

How To Substitute Oat Flour For Regular 

Oat flour is a great addition to bread and muffin recipes because it soaks up moisture and expands to make baked goods fluffy and tender. It also adds a hint of nutty flavor that I absolutely love in breakfast foods specifically.

While you can’t substitute oat flour for regular on a 1:1 ratio, you can substitute 1/4 of the total flour in the recipe with oat flour. So for example, if a recipe calls for 2c of flour, I’ll use 1 1/2c of regular or gluten-free flour blend and 1/2c of oat flour.

Is Oat Flour Gluten-Free?

Sort of. While oats themselves are naturally gluten-free, many facilities process them using the same equipment used for non-gluten-free foods. So if you or someone you cook for has Celiac’s Disease, you’ll want to choose certified gluten-free oats.

I particularly like adding oat flour to gluten-free recipes because it creates a heartier crumb. My chief complaint with many gluten-free flour blends is that the crumb is so fine that it either dries out or seems under-baked. Adding oat flour using the substitution instructions I described earlier usually solves this problem.

Homemade oat flour in a jar and measuring cup

How To Make Homemade Oat Flour

You’re not going to believe how simple this is.

  1. Place oats in food processor.
  2. Blend into a fine flour.


Stupid easy, right?

Making Oat Flour Without A Food Processor

I prefer to use my food processor because it allows me to make bigger batches without stopping to scrape the sides of the bowl every two seconds. But if you don’t have a food processor, a blender can work just fine. I’ve made oat flour with a Vitamix by working in smaller batches to cut down on scraping. I found that blending 1c of rolled oats at a time yielded the fastest results with the finest grain of flour.

Homemade gluten-free oat flour in a jar and measuring cup.

What To Make With Oat Flour

Ohhhh so many things. Try using or substituting 1/4 oat flour in:

Blueberry Lemon Bread

Spiced Banana Bread

Paleo Ginger Pear Muffins

Paleo Pumpkin Muffins

Want More Healthy Baking Ideas Like This? Check Out:

My Guide To Healthy Baking

Have you tried this recipe? Leave a comment! And don’t forget to post a pic on Insta and tag @freshandlively


How To Make Your Own Oat Flour

Homemade oat flour in jar and measuring cup

The secret to the fluffiest muffins and breads is just 2 minutes away! All you need is a food processor and some oats.

  • Author: Christine Tusher



2c oats


  1. Place oats in food processor and process for 1 minute.
  2. Pause to check progress and scrape down sides with a spatula if needed.
  3. Process for an additional minute, or until oats are ground into a fine flour.


Store in an airtight container for up to 3 months.

Keywords: homemade oat flour, how to make your own oat flour, gluten-free flour

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