This tutorial on how to make oat flour will answer all of your questions about the easy to make gluten free flour. Oat flour is inexpensive and can be used in several different delicious recipes!

I am so excited to bring you another post in our All the Healthy Things “Just the Basics” series. These posts are focused on helping you master basics in the kitchen and, hopefully, inspiring you with a few new ideas along the way.

If you are new to cooking, or just need a refresher on the basics, these posts are designed to help you feel more confident in the kitchen. Once you have a handle on a few basic concepts and techniques, you can easily build upon them to create new and exciting recipes dishes without a second thought.

If you have ever wondered how some people just seem to know how to cook without a recipe or can quickly throw together a meal in a moment’s notice, it’s likely because they have a good grasp of the basics. I want that for you! It’s my hope that every just the basics post helps you feel more comfortable so that you can enjoy your time spent in the kitchen even more!

If you haven’t already be sure to check out the other how-to guides in the series.

Here are a few of our most popular posts: 

How to Bake Sweet Potatoes

How to Make Cashew Milk 

How to Make Homemade Tzatziki Sauce

How to Make Easy Quick Pickled Onions

What is Oat Flour?

Oat flour is a simple and inexpensive flour made from you guessed it – oats! It’s a great option for gluten free baking and can be used in several different recipes.

While you can buy oat flour at some grocery stores or online, you can easily make it yourself at home for pennies on the dollar.

Watch How to Make Oat Flour

All you need are oats and a high-powered blender or food processor to make your very own homemade oat flour.

oat flour in glass with spoon

Why Oat Flour Is Great for Gluten Free Baking?

If you have any experience with gluten-free baking you know that it can be a little tricky. I’ve had my fair share of baking fails when experimenting with alternative flours.

I love using gluten-free flour blends for more complex recipes when I need a one-to-one substitution for all-purpose flour. But, there are some great recipes that are specifically designed to be made with oat flour and I always love the way they turn out.

In addition to being easy to work with oat flour is also much less expensive than gluten-free flour blends and can be made at home!

oats in blender

Which Oats are Best?

To make oat flour you’ll need old fashioned “rolled” oats. I do not recommend using steel cut or quick oats for oat flour.

While oats are naturally gluten free, they can sometimes be cross-contaminated with gluten if they are processed in a facility that makes other items that contain gluten. If you need the oat flour to be certified gluten free then be sure to grab certified gluten free oats.

oat flour in blender

How to Make

Step One: Measure and add the oats to a high-powered blender or food processor.

Step Two: Pulse or blend the oats until they turn into a fine powder. If you are using a blender, you may need to give it a shake to ensure that all of the oats blend evenly. 

Step Three: Transfer the oats to an air-tight container and store in a cool dark place. 

Frequently Asked Questions

Can I substitute oat flour for all purpose flour?

While it might work sometimes, depending on the recipe, I would not recommend using oat flour as an automatic substitute for all purpose flour in every baking recipe. Baking can be tricky and the amount of liquid, eggs, butter, etc. may need to be adjusted if you change the type of flour being used. 

How much oat flour will one cup of oats make?

One cup of oats will typically yield around three-fourths a cup of oat flour. 

What’s the best way to store oat flour?

Store your oat flour in an air-tight container to avoid any moisture creeping into flour and causing it to clump. You can store in a cool dark place like your pantry to keep it fresh. 

How do I use oat flour?

My preferred way to use oat flour is muffins! I have several different muffin recipes made with oat flour on All the Healthy Things that I have linked to, below. You can also use oat flour as a substitute for the almond flour in my fruit crisp recipes, as the base of pancakes, and more!

muffins stacked on each other

Reader Favorite Oat Flour Muffin Recipes

Healthy Pumpkin Banana Chocolate Chip Muffins

Apple Cinnamon Muffins

Healthy Peanut Butter Banana Muffins

Blueberry Banana Muffins

Healthy Banana Nut Muffins

Almond Butter Sweet Potato Muffins

Healthy Banana Chocolate Chip Muffins

Pumpkin Chocolate Chip Muffins

Gluten Free Banana Chocolate Chip Zucchini Muffins

oat flour in weck jar with spoon

I hope you give this tutorial on oat flour is helpful for you! You can make so many delicious recipes with it!

If you do give this recipe a try, I want to know! Leave a comment with a star rating below. You can also snap a photo & tag @allthehealthythings on INSTAGRAM. Your reviews help support All the Healthy Things and make it possible for me to continue to create the recipes you know and love.

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oat flour in weck jar with spoon

How to Make Oat Flour

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  • Author: Ashlea Carver
  • Prep Time: 5 minutes
  • Total Time: 5 minutes
  • Yield: 6 1x
  • Category: Baking
  • Method: No Cook
  • Cuisine: American
  • Diet: Gluten Free


This tutorial on how to make oat flour will answer all of your questions about the easy to make gluten free flour. Oat flour is inexpensive and can be used in several different delicious recipes!


  • 2 cups rolled oats


  1. Add the oats to a high-powered blender and blend on high until the oats are completely broken down and you have a fine powder similar to traditional flour.
  2. Transfer the flour to storage container like a mason jar or flour storage container.

Recipe by: Ashlea Carver / All the Healthy Things | Photography by: Eat Love Eats


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