How To Make Oat Flour At Home

Here is how to make oat flour at home. Making your own oat flour is a simple DIY recipe that requires just a few minutes of effort and a blender or food processor.

It’s a great option when you want to avoid buying pre-packaged flour or when you need it for specific recipes.

With just rolled oats, you can quickly grind them into a fine, powdery flour that works perfectly for baking or as a thickener in smoothies.

This homemade recipe gives you control over the quality of your ingredients and is budget friendly too.

The first time I made my own oat flour, I was surprised at how easy and quick it was—plus, I loved knowing exactly what was going into my recipes!

How To Make Oat Flour

Ingredients for making oat flour

The best type of oats to make your own flour is old fashioned rolled oats.

Old fashioned rolled oats

Supplies for making oat flour

Food processor

Storage jars, like mason jars are perfect for storing.

Recipe steps

• Decide How Many Cups You Want To Make – Use about 1 cup of oats to make roughly 3/4 cup of oat flour.
• Blend or Process – Add the oats to a high-speed blender or food processor. Blend on high until the oats turn into a fine, flour-like consistency.
• Check the Texture – Stop and check the or any larger oat pieces. If needed, blend again until the flour is smooth and even.
• Sift (Optional) – For an extra fine flour, pass it through a fine-mesh sieve to remove any remaining coarse bits.
• Store Properly – Transfer the flour to an airtight container and store it in a cool, dry place. For longer freshness, keep it in the refrigerator or freezer.

How long will oat flour last?

Oat flour will last about 3 months when stored in an airtight container at room temperature. For longer storage, keep it in the refrigerator for up to 6 months or in the freezer for up to a year. Always check for any off smells or signs of moisture before using.

Tips for making oat flour at home

Use a high-speed food processor

A food processor will create the finest, most consistent texture.

Blend the oats in batches

If making a large amount, blend in smaller batches so that the oats grind properly.

Stir midway

Stop and stir the oats to help everything blend evenly.

Oats are not a 1:1 substitute for regular flour

This type of flour absorbs liquid differently than all-purpose flour. Adjust recipes accordingly or use a blend of flours for the best texture.

Why I love making my own oat flour

Store-bought flour is fine, but grinding it myself means I get exactly what I need for each recipe. Lately I’ve been really paying attention to ingredient lists and have cut back many different things that have ingredients that will not be in there when something is homemade.

I also love that it’s just one ingredient—no fillers or preservatives, just pure oats. Plus, it’s a great way to use up oats I already have in the pantry, making it both budget-friendly and convenient.

How to use oat flour

This type of flour works well in many recipes. It’s great for baking muffins, pancakes, and cookies, adding a soft texture and a mild, slightly nutty flavor.

It can also be used to thicken soups and sauces or as a gluten-free alternative to breadcrumbs in meatballs and coatings.

While it doesn’t behave exactly like all-purpose flour, it blends well with other flours in baked goods.

Try using it in this recipe for oatmeal pancakes. You can use it instead of the rolled oats.

Oat flour FAQ’s and answers

Can I substitute oat flour for all-purpose flour 1:1?

No, oat flour does not have the same structure as all-purpose flour, so it cannot be swapped in a 1:1 ratio. It absorbs more liquid and lacks gluten, which affects the texture of baked goods. To use it in baking, it’s best to use in recipes that actually call for it.

Does it taste different from regular?

Yes, it has a mild, slightly nutty flavor that adds a subtle sweetness to baked goods. It works especially well in pancakes, muffins, and cookies but can also be used in savory dishes like breading or thickening soups.

How do I store homemade flour?

Store it in an airtight container in a cool, dry place for up to two months. For longer storage, keep it in the refrigerator or freezer to prevent it from going stale or absorbing moisture.

Is oat flour gluten-free?

Oat flour is naturally gluten-free, but if you need to avoid gluten completely, make sure to use certified gluten-free oats. Regular oats can be cross-contaminated with gluten during processing.

Hope this guide helped you make your own oat flour! It’s such a simple and useful ingredient to have on hand. If you give it a try, leave a comment below and share how you like to use this in your recipes. Do you bake with it? Add it to smoothies? Let’s swap ideas!

Did you know that you can also make your own homemade oat milk? Check out this guide on how to make oatmeal milk.