How To Make Oat Flour at Home

Are you wondering how to make oat flour?

jar full of oat flour! Have you ever wondered how to make oat flour? This post will tell you how!

I’m a fan of making things myself. Especially things that are super easy.

Usually it’s significantly cheaper to DIY and a lot of the time it’s better for you too.

Oat flour is one of those things. Don’t spend extra money paying someone else to grind your oats! Do it yourself. It takes seconds. Nope, that’s not exaggerating.

It really is as easy at it seems.

All you need is:

  • a blender
  • old fashioned rolled oats

a blender with oats in it. If you've ever wondered how to make oat flour, this post will tell you how.

Let’s talk blenders for a second. I received a JC Penney brand blender when we got married 12 years ago. Nothing super expensive or fancy but it worked. Until it didn’t. It burned out after a couple of years.

Next, we got a Ninja Prep. Again, nothing super expensive. I think we got it on Black Friday for under $40. That worked okay for a while. Then it spend a year of making me wonder if each use was going to be its last until it finally hit the dust a year ago.

After months of internal debate (I struggle when it comes to spending money), we settled on a refurbished Vitamix. (That’s the one I got – super, super great deal on 2018 Prime Day for just over $200.)

It is a dream.

The homemade oat flour comes out so much finer than it ever did in the Ninja.

How To Make Oat Flour

It’s as easy as measuring your rolled oats, putting them in the blender, and turning it on.

30 seconds. That’s it – and you are done and ready to bake.

If the recipes calls for 1 cup of oat flour, put 1 scant cup of rolled oats in the blender.

measuring cups with homemade oat flour. If you've ever wondered how to make oat flour, this post will tell you how.

2 cups of rolled oats equals about 2 1/3 cups of homemade oat flour!

Again, your blender will make a difference as to how fine the oat flour will be. Not as good of blenders will require a longer period of blending and will still result in a grittier flour – but you can still make it! I did it that way for years. 🙂

Be sure to “fluff” your flour when it comes out of the blender before measure. It can be a little compact.

A couple other easy and cheap things you can try making yourself:

Homemade Yogurt
“Refried” Beans

How To Make Oat Flour
  • Rolled Oats
  1. Put the amount of rolled oats in the blender that you want of oat flour.
  2. Turn the blender on and blend for a minute - the oats will turn into a flour like powder.
  3. Loosely scoop into a measuring cup and use in place of purchased oat flour.


What are you favorite food items to DIY? Give this easy homemade oat flour a try before you go out and buy it again. Learning how to make oat flour is a breeze!

a blender and measuring cups with rolled oats. If you have ever wondered how to make oat flour, this post will tell you how!

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