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    Home » Recipes » Grains

    How to Make Oat Flour in a Blender

    Published: Jan 30, 2023 by Nataliia

    Jump to Recipe Print Recipe

    Learn how to use your blender to make oat flour at home. Ready in 3 minutes, this homemade gluten-free flour is great for making muffins, pancakes, tortillas, and more.

    A wooden spoon with fine oat flour held over the blender container.

    Why to make your oat flour?

    • Cost efficiency: For reference, one cup of oats makes 1 cup of flour. One cup of flour costs 73 cents, while one cup of oats costs 38 cents. And it's even cheaper if you buy oats in bulk. 
    • Freshness: once you open store-bought oat flour, it lasts only for about 2 months before it gets stale. Oats stay fresh for about 9 months after opening and can be turned into fresh flour at any time. 
    • No contamination: it is more likely that oat flour can be contaminated with other ingredients during the grinding process. At home, you know for sure what it is made of. 
    • Nutritious: oat flour is rich in dietary fiber, phosphorus, thiamine, magnesium, and zinc. For example, waffles and pancakes will have more fiber and nutrients if you make them with oat flour. 

    What oats are the best to grind into the flour?

    You will need old-fashioned rolled oats or quick oats. I find that old-fashioned oats flour works better in baked goods. 

    You can also use steel cuts oats (not recommended), but you will need a special grains dry container to make it. 

    Dry oats in a glass bowl placed on a wooden surface.

    The choice of blender

    You will need a high-powered blender to use to make the flour. Most good quality blenders, such as Vitamix, Ninja, or NutriBullet can handle grinding nuts and grains. 

    I used my Vitamix blender and it's a regular container. If you have, you can use a grains dry container. 

    Rolled oats are quite soft and wet container blades grind rolled oats in fine flour with no problem. 

    You can also use a food processor to make oat flour. 

    Recommendations how to substitute oat flour for all-purpose flour

    Unless the recipe was developed to be made with only oat flour (like our oat flour waffles), it is not recommended to fully substitute oat flour for all-purpose one when making cakes, cookies, muffins, and other baked goods. 

    Instead, do a combination of both: 3 parts of wheat flour and 1 part of oat flour. 

    Oat flour by itself will not raise well and result in a dense texture if you use it to make a cake

    You can have the best results, by fully substituting oat flour for all-purpose one when making pancakes, waffles, and cookies. Start with one for one ratio and if the batter is too thin, add one Tablespoon of oat flour at a time until the right consistency is reached. 

    Oat flour in glass bowl placed on a wooden surface.

    How to make oat flour in a blender

    It will take only 2 steps and a few minutes to grind the oats into flour. I used my Vitamix blender with its regular pitcher. 

    Step 1. Measure one cup of oats and pour it into the blender container. You can add as many oats as your blender allows. 

    Vitamix blender unit with a hand flipping the turn on switch. The container has dry oats in it.

    Note: one cup of oats makes about 1 cup of oat flour.  

    Overhead view of a plastic blender container filled with uncooked oats.

    Step 2. Start the blender on low and quickly switch it to high for about 30 seconds. Stop the blender and shake the container a few times to make sure all the oats are getting blended evenly. Blend for another 15-30 seconds or until the oats turn into fine flour. 

    Overhead view of a plastic blender container with fined flour.

    Best ways to use oat flour

    • Baked goods: use a specifically developed recipe or you can use 1 part of oat flour and 3 parts of wheat flour. 
    • Breakfast staples: you can easily use oat flour to make waffles, pancakes, baked oats, and breakfast bars.
    • Breading: use oat flour instead of wheat to make chicken tenders or fried fish. 
    • Thickening: add a few tablespoons of oat flour to thicken stews and soups. 

    Tips

    • Use a high-powered blender.
    • Old-fashioned or quick oats will work the best.
    • Make sure the blender is completely dry before adding the oats.
    • Add at least one cup of oats, or enough to cover the blender blades.
    • Sift the flour after grinding. You can regrind the coarse particles left in a sifter.
    • Make sure the oats are gluten-free certified if you are avoiding gluten.

    Storage

    Transfer the fresh flour to an air-tight container, jar, or food storage bag. I recommend labeling the container with the date and content. Store the oat flour in a cool dry place. 

    Home-made oat flour will stay fresh for up to 2 months when stored properly. 

    Frequently asked questions

    Is oat flour gluten-free?

    If you make the oat flour from certified gluten-free oats. If you buy oat flour in the store, make sure it has a gluten-free label as well and there are no cross-contamination warnings.

    Can you make oat flour by grinding up oatmeal?

    Yes, oat flour is made from uncooked oats. Use plain old-fashioned or quick oats for grinding. 

    Can I make oat flour using a food processor or immersion blender?

    Yes, rolled oats are soft grains (compare to rice or barley) and you can use a food processor or even an immersion blender to grind them into fine flour.

    A wooden spoon with fine oat flour held over the blender container.

    How to make oat flour in a blender

    Nataliia
    Learn how to use your blender to make oat flour at home. Ready in 3 minutes, this homemade gluten-free flour is great for making muffins, pancakes, tortillas, and more.
    5 from 1 vote
    Print Recipe Pin Recipe
    Prep Time 2 mins
    Cook Time 1 min
    Total Time 3 mins
    Course Baking
    Cuisine American
    Servings 2
    Calories 150 kcal

    Equipment

    • 1 Measuring Cup
    • 1 high-powered Blender I used Vitamix, wet blade container

    Ingredients
      

    • 1 cup uncooked old fashioned oats

    Instructions
     

    • Add one cup of uncooked oats into the regular (no dry blades needed) blender container. Place the lid.
    • Start the blender on low and increase to its highest speed. Blend for about 30 seconds. Stop the blender to shake the container. Blend again on high for another 30 seconds or until desired consistency.
    • Use oat flour to make pancakes, waffles, muffins and more.

    Notes

    • You can use quick or old fashioned oats.
    • Vitamix wet blade container works great to make oat flour.
    • One cup of oats makes 1 cups of flour.
    • Store home-made oat flour in a dry place for up to 2 months.

    Nutrition

    Calories: 150kcalCarbohydrates: 27gProtein: 5gFat: 3gFiber: 4gSugar: 1g
    Keyword gluten free baking, home made oat flour, oat flour
    Tried this recipe?Let us know how it was!

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    Hi there, I'm Nataliia. I am a content creator behind Sava's Kitchen. Here, you will find a lot of healthy family-friendly recipes. My focus is to create versatile nutritious recipes that taste great and are easy to make. Learn more about me by clicking below!

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