How To Make Oat Flour


5 from 42 votes
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Learn how to make your own homemade oat flour in less than a minute, and never buy store-bought! All you need is 30 seconds and one ingredient!

Love making your own pantry staples? Try blanched almond flour, self-rising flour, and coconut flour.

oatmeal flour.

Have you ever tried making your own oat flour? It can be used in place of white or wheat flour in many recipes.

We love making it because it comes in handy whenever we run out of other kinds of flour. I mean, considering I eat oatmeal almost every single day, it’s safe to say we always have the one thing you need to make it.

Table of Contents
  1. Benefits of using oat flour
  2. Ingredients needed
  3. How to make oat flour at home
  4. Recipe tips 
  5. Storage instructions
  6. Frequently Asked Questions
  7. Recipes using oat flour
  8. Homemade Oat Flour (Recipe Card)

Benefits of using oat flour

  • One ingredient. Either rolled oats or quick oats– that’s all there is to it. 
  • Cost-effective. A package of store-bought oat flour retails for close to $8 a package. When made using a 90-cent package of oats, it costs a fraction of that price. 
  • A great flour replacement. Instead of using white or wheat flour, try oat instead, and you’ll be surprised how versatile it is. 
  • Healthy. Compared to wheat-based flour, the oat version has extra fiber, protein, vitamins, and minerals without even trying (source).

Ingredients needed

As mentioned earlier, this recipe takes just one ingredient to make. Here is what you’ll need: 

  • Rolled oats. Either gluten-free oats, old-fashioned oats, or steel-cut oats. You can use quick-cooking oats, but I find they lack the added texture. If you use steel-cut oats, keep in mind they will require more blending time. 

How to make oat flour at home

I’ve included step-by-step photos below to make this recipe easy to follow at home. For the full printable recipe instructions and ingredient quantities, scroll to the recipe card at the bottom of this post.

Step 1—Blend. Add the old-fashioned rolled oats to a high-speed blender or food processor. Blend for 15 seconds until the oats are coarsely chopped. Blend once more until a fine, flour-like texture appears.

Step 2- Store. Transfer to a jar or sealable container.

oat flour recipe.

Recipe tips 

  • Pause as you’re blending to scrape down the sides of the blender so you don’t accidentally end up with oat butter. 
  • It takes about 1 ½ cups of rolled oats to equal 1 cup of flour, so plan accordingly to ensure you make enough for your recipe.
  • I recommend using roughly 1 ¼ cups of oat flour for every 1 cup of all-purpose flour. 
  • Make self-rising oat flour by combining 1 cup of oat flour with 1 ½ teaspoons of baking powder and ¼ teaspoon of salt. 

Storage instructions

To store: Leftovers should be stored in a sealable container, at room temperature. It will keep fresh for up to 6 months.

To freeze: Place flour in a ziplock bag and store in the freezer for up to 6 months. 

oat flour.

Frequently Asked Questions

Can you use this flour like regular flour?

If taste and texture aren’t an issue for you, you can technically swap out all-purpose flour for oat flour. Where you will find trouble is the texture—oat flour can usually dry out baked goods more easily than all-purpose flour, so you may need to add some extra liquid to compensate. 

Is this good for baking?

Compared to other flours, the oat version is a fantastic option to use in baking. It yields a more tender crumb and a heartier texture.

Recipes using oat flour

oat flour

Homemade Oat Flour

5 from 42 votes
Learn how to make oat flour in 30 seconds! Made with just one ingredient, it's a fabulous replacement for wheat and white flour!
Servings: 4 servings
Prep: 1 minute
Cook: 1 minute
Total: 2 minutes



  • In a high-speed blender or food processor, add your rolled oats
  • Blend for 15 seconds until oats are coarsely chopped. Blend once more until a fine, flour-like texture appears.
  • Transfer to a jar or sealable container.


TO STORE: Leftovers should be stored in a sealable container, at room temperature. It will keep fresh for up to 6 months.
TO FREEZE: Place flour in a ziplock bag and store in the freezer for up to 6 months. 


Serving: 1servingCalories: 192kcalCarbohydrates: 34gProtein: 7gFat: 3gSodium: 3mgPotassium: 183mgFiber: 5gCalcium: 26mgIron: 2mgNET CARBS: 29g
Course: Kitchen Staple
Cuisine: American
Author: Arman Liew
Tried this recipe?Give us a shout at @thebigmansworld or tag #thebigmansworld!

Originally published April 2020, updated and republished March 2024

Arman Liew

I’m a two time cookbook author, photographer, and writer, and passionate about creating easy and healthier recipes. I believe you don’t need to be experienced in the kitchen to make good food using simple ingredients that most importantly, taste delicious.

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5 from 42 votes (40 ratings without comment)

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Recipe Rating


  1. 5 stars
    Very tasty & I use it with Spelt & Artisan Bread flour, sifted together for my Sour dough & Biscoti/Cookies recipes.
    Delicious & satisfying!

  2. 5 stars
    I haven’t tried this but I am going to as I really need a low-carb flour and as you say everyone has this in their cupboard. thanks from England, UK

  3. Can I add 1/4 cup of oat fiber to reduce pure oatsand to add more fiber to lower carb count and get the same result?

      1. Hi Arman,
        Can steel cut oats be used instead of rolled oats? That’s just what I happen to have on hand in my pantry.

  4. So Can I use oat flour to make self rising gluten free flour then? Just add the baking powder and baking soda after I make my homemade oat flour ?