Learn how to make oat flour in less than a minute- you won’t need to buy store-bought! Using a bag of oatmeal, this oatmeal flour recipe is ready in 30 seconds.
Have you ever tried making oat flour? It can be used instead 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 daily, it’s safe to say we always have the one thing you need to make it.
Table of Contents
Why I love using oat flour
- One ingredient. Just some oatmeal!
- Cost-effective. A package of store-bought oat flour retails for close to $8. Making it using a 90-cent package of oats costs a fraction of that price.
- Wheat flour replacement. Instead of using white or wheat flour, try oat flour, and you’ll be surprised by its versatility.
- Healthy. Compared to wheat-based flour, the oat version has extra fiber, protein, vitamins, and minerals without even trying (source).
If you love making your own flour, try blanched almond flour, self-rising flour, and coconut flour next.
★★★★★ REVIEW
“I love making my own oat flour. It’s so much cheaper than the store-bought kind, and I use it in all my baking.” – Suzanne
Key Ingredient
- Rolled oats. Old-fashioned oats, or gluten-free oats. You can use quick-cooking oats, but they lack the added texture. Remember that steel-cut oats will NOT work and will break your blender (we tried. RIP to that blender).
How to make oat flour
This is an overview with step-by-step photos. Full ingredients & instructions are in the recipe card below.
Step 1- Add the oats to a high-speed blender or food processor.
Step 2- Blend for 15 seconds until the oats are coarsely chopped. Blend once more until a fine, flour-like texture appears.
Arman’s recipe tips
- Pause as you blend 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.
Frequently asked questions
If taste and texture aren’t an issue, you can technically swap out all-purpose flour for oat flour. The texture is where you will find trouble- 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.
Compared to other flours, the oat version is a fantastic option for baking. It yields a more tender crumb and a heartier texture.
Recipes using oat flour
If you tried this Oat Flour Recipe or any other recipe on The Big Man’s World, please rate the recipe in the comments below. It really helps others thinking of making the recipe.
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In a high-speed blender or food processor, add the rolled oats.
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Blend for 15 seconds until oats are coarsely chopped. Blend once more until a fine, flour-like texture appears.
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Transfer to a jar or sealable container.
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
Originally published April 2020, updated March 2024, updated May 2025.
