All you need are oats and a blender to make oat flour at home! Light, fluffy, and neutral in flavor, oat flour is a delicious in all kinds of baked goods!

Wondering how to make oat flour at home? I can help! Check out my recipe to learn the steps to make homemade oat flour.

Gluten-free oat flour in a bowl


 

There are lots of reasons to make your own homemade oat flour. Maybe you want to make gluten-free oat flour muffins, quick breads, cookies, or brownies. Maybe you want to make a healthier dessert using whole grains. Or maybe you’re simply out of regular flour.

In any case, oat flour is a great alternative to all-purpose flour. It’s nutritious, light, fluffy, and versatile. It’s a key ingredient in a variety of recipes, and a pantry staple for gluten-free baking!

Use this oat flour to make oat flour waffles, oat flour chocolate chip cookies, oat flour muffins and oat flour brownies.

It’s also delicious in oat flour banana bread, oat flour pancakes, oat flour banana muffins and more!

And while you can buy oat flour at the grocery store, it’s just as easy to make oat flour at home. So save yourself the trip and pull out the food processor or high speed blender. Let’s get started!

Table of Contents

Are Oats Gluten-Free?

No, not all oats are gluten-free.

Even though oats are naturally free of gluten, there is a high risk of cross-contaminating with wheat during the manufacturing process. This means that regular oats may contain gluten.

So if you want to make gluten-free baked goods, it’s very important to use certified gluten-free oats (I like Bob’s Red Mill).

Certified gluten-free oats are safe for people with Celiac disease because they’re made in a separate facility. They’ve also been tested to ensure they contain less than 20 ppm gluten.

So when in doubt, look for the gluten-free label on any oat flour you buy at the grocery store! You can also make homemade oat flour in a food processor or high-speed blender, but you’ll need to buy gluten-free oats to make them.

You also might like these articles on substitute for oat flour, is oat milk gluten-free, gluten-free steel cut oats, gluten-free overnight oats and are oats gluten-free.

Check out this full collection of oat flour recipes!

Ingredients

Oats in a bowl

Oats are the only ingredient you need to make oat flour! You can use old-fashioned oats (rolled oats), quick-cooking oats, or steel-cut oats.

Just keep in mind that the type of oats you use will result in a different amount of oat flour.

Quick-cooking and old-fashioned oats yield a little less than one cup of flour, while steel-cut oats will make closer to two cups of flour. (Steel cut oats are also a bit harder to blend.)

How to Make Oat Flour

Oats in a blender, and oats blended up in the blender
  • Fill your blender or food processor about halfway with oats.
  • Blend until the oats turn into flour-like consistency, with no whole oats. This could take anywhere from 30-60 seconds.
An overhead view of oats in a blender, and blended oats in the blender
  • Use oat flour immediately for baking, or store for later use.

You also might like these oatmeal pancakes.

Storage Instructions

Store oat flour in an airtight container at room temperature for up to three months. (You can also store oat flour in the freezer to make it last longer.)

A hand holding a spoon and scooping up gluten-free oat flour from a bowl

FAQs

Is oat flour just ground up oats?

Yes, oat flour is just made from a cup of oats that has been ground into a fine powder in the blender or food processor. It’s easy to make at home—just be sure you buy gluten-free oats if you want gluten-free oat flour.

How to make oat flour from whole oats?

You can make your own homemade oatmeal flour by blending two cups of old-fashioned oats or instant oats in a blender for about 60 seconds, until it has become a fine powder. You can make more ground oats by working in small batches, then storing the oat flour in an airtight container for up to three months. (Oat flour has a shorter shelf life than regular white flour, because it contains more oil.)

How do you make 2 cups of oat flour?

You can easily make two cups of oat flour by blending oats in a blender or food processor. Use two cups of old-fashioned oats or quick oats, or one cup of steel-cut oats to yield two cups of oat flour.

Expert Tips & Tricks

  • Oat flour doesn’t contain gluten, so you may need to add other ingredients (like baking powder/soda in combination with apple cider vinegar or lemon juice) to help create a light and fluffy texture. I’ve developed many recipes specifically for oat flour, so if you follow these recipes, you can be sure the final results will turn out!
  • Remember that if you want to keep a recipe gluten-free, you need to by certified gluten-free oats for making your own oat flour.
  • I prefer using old-fashioned oats for homemade oat flour. If you use steel-cut oats, note that it will make double the amount of oat flour.
  • Need a substitution for oat flour? Check out Substitutions for Oat Flour.
Gluten-free oat flour in a bowl with a wooden spoon in it

OAT FLOUR RECIPES

I hope you love this recipe as much as we do! If you try this gluten-free oat flour, be sure to leave me a comment/rating below. I’d love to hear from you! 

Gluten-free oat flour in a bowl with a wooden spoon in it
5 from 3 votes

How to Make Oat Flour (Easy Blender Recipe!)

Prep Time 5 minutes
Servings 2 cups
All you need are oats and a blender to make oat flour at home! Light, fluffy, and neutral in flavor, oat flour is a delicious in all kinds of baked goods!

Ingredients

  • 2 cups oats old-fashioned, quick cooking, or *steel-cut

Instructions 

  • Fill a blender or food processor about halfway with oats.
  • Blend until the oats turn into flour-like consistency, with no whole oats. This could take anywhere from 30-60 seconds. (I usually repeat this a second time for extra smooth flour.)
  • Use oat flour immediately for baking, or store for later use.

Notes

*Steel-cut oats will yield four cups of oat flour.
RECIPE NOTES
  • Oat flour doesn’t contain gluten, so you may need to add other ingredients (like baking powder/soda in combination with apple cider vinegar or lemon juice) to help create a light and fluffy texture.
  • I’ve developed many recipes specifically for oat flour, so if you follow these recipes, you can be sure the final results will turn out! (Linked above!)
  • Remember that if you want to keep a recipe gluten-free, you need to by certified gluten-free oats for making your own oat flour.
  • I prefer using old-fashioned oats for homemade oat flour. If you use steel-cut oats, note that it will make double the amount of oat flour.

Nutrition

Calories: 153kcal | Carbohydrates: 27g | Protein: 5g | Fat: 3g | Saturated Fat: 0.5g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 1g | Sodium: 2mg | Potassium: 147mg | Fiber: 4g | Sugar: 0.4g | Calcium: 21mg | Iron: 2mg

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Hi, I’m Erin!

BS Food Science,

MS Nutrition

I believe you can make amazing, gluten-free food with everyday ingredients that everyone will enjoy. I’m here to share my tried-and-true recipes with you!

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Comments

  1. 5 stars
    Loved your monster peanut butter cookie recipe. My daughter needs gluten free and your recipes are great. Thank you

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