Make Your Own Oat Flour

Published by:
Liz Marino
| 10/18/2022 | Last Updated: 04/20/2026

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Let us show you how to make oat flour at home and you’ll never want to buy it again. You only need one ingredient, and it’s super quick and easy to make!

A white bowl of oat flour with a wooden scoop in it with rolled oats in the background


 

If you enjoy baking and want to get as many nutrients as possible through food, use oat flour instead of all-purpose flour. Trust us, there are loads of benefits to doing this!

First of all, oat flour is a 100% whole grain. It’s naturally gluten-free, low in carbs, and high in soluble fiber (the kind that helps you feel full). Plus, it’s a good source of nutrients like chromium, magnesium, biotin, copper, phosphorus, manganese

In most recipes, especially baked goods, it’s easy to use oat flour as a substitute for all-purpose flour. We use it to make things like pumpkin muffins, protein pancakes, and sweet potato muffins!

Buying it can be expensive, but making it yourself is budget friendly. It is also incredibly quick and easy to make.

Wooden spoon in a clear bowl filled with ground rolled oats.

Oat Flour FAQs

Is oat flour gluten free?

Although oats are naturally gluten free, some manufacturers process gluten-containing grains like wheat on the same machinery. For this reason, it’s important for anyone with Celiac disease, an allergy, or an intolerance to use certified gluten-free..

Can I use steel cut oatmeal to make the flour?

Unfortunately not. Steel cut grains are much tougher, so they don’t easily grind down into a fine powder.

How much oat flour equals 1 cup of all-purpose flour?

1 cup of rolled old fashioned oats yields about 3/4 cup of flour. For most recipes, the ratio of oat flour to regular flour is 1:1.

Ingredients

Here’s what you need to make it:

Overhead view of oat flour and a wooden spoon in a clear glass mixing bowl.

Equipment

You will also need a high speed blender or sturdy food processor.

How To Make Oat Flour At Home

Plug in your food processor – here we go!

An overhead shot of a food processor with oats in it before pulsing
  1. Add the oats to your blender or food processor. Pulse for 30 seconds to 1 minute.
An overhead shot of a food processor with a powdery substance in it.
  1. After pulsing, the oat flour in the bowl should have a fine powder-like consistency.
Hand holding a wooden spoon, pushing homemade oat flour through a fine mesh strainer into a glass mixing bowl.
  1. If there are any lumps or clumps, you can sift them through a fine mesh strainer.
A close up of large wooden spoon pushing oat flour in a mixing bowl.

Storing and Freezing Instructions

Refrigerator: This will last in the refrigerator for up to 3 months in an airtight container.

Freezing: You can freeze homemade oat flour for up to 6 months. Be sure to keep it in a freezer-safe food storage bag or airtight container.

A white bowl of oat flour with a wooden scoop in it and a measuring up of old fashioned rolled oats in the background.

Ways to Use It

Now that you know how to make oat flour, here are some delicious things to bake with it!

A white bowl of oat flour with a wooden scoop in it with rolled oats in the background

How to Make Oat Flour

Recipe by: Liz Marino
5 from 1 vote
Let us show you how to make oat flour at home and you'll never want to buy it again! All you need are rolled oats, and it's so easy!
Prep Time : 5 minutes
Cook Time : 0 minutes
Total Time : 5 minutes
Serves : 0.75 cup oat flour
(hover over # to adjust)

Ingredients

  • 1 cup old fashioned rolled oats

Instructions

  1. In a blender or food processor pulse old fashioned oats for 30 seconds to 1 minute until a fine flour-like consistency.
  2. 1 cup of old fashioned oats will give you 3/4 cup flour.

Nutrition Facts

Serving: 0.75cup | Calories: 409kcal | Carbohydrates: 73g | Protein: 14g | Fat: 7g | Saturated Fat: 1g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 2g | Sodium: 6mg | Potassium: 391mg | Fiber: 11g | Sugar: 1g | Calcium: 56mg | Iron: 5mg
Course: Side Dish
Cuisine: American
Tried this recipe?Share it! Make sure to tag @thecleaneatingcouple or use #thecleaneatingcouple!
5 from 1 vote

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7 Comments

  1. Do you measure the oat flour after its blended?

    1. If you’re using it in a recipe, yes. You should measure it after it’s been blended. It will be pretty close!

  2. 5 stars
    Make your own oat flour. Ridiculously easy and cheap.

  3. Kassandra says:

    Can I use Almond flour instead of oat flour?

    1. The Clean Eating Couple says:

      no you cant, sorry!

  4. Tricia Wilding says:

    I wanted to make your banana muffins (they look delicious!) but I do not have oat flour on hand. I have accidently purchased 1 minute instant oats (twice!), so can I use instant oats to make oat flour?

    1. The Clean Eating Couple says:

      Yes you can! They will work just fine 🙂