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How to Make Oat Flour

Here's how to make oat flour at home in just minutes! All you need is 1 ingredient and less than 5 minutes of time to make this naturally gluten-free flour.

Prep Time
5 mins
Total Time
5 mins
Servings: 7 (1/4 cup servings)
Calories: 88 kcal
Course: Side Dish
Cuisine: gluten-free

Ingredients

  • 2 cups old-fashioned rolled oats (about 200 grams; or quick oats)

Instructions

    Cup of Yum
  1. Place the oats in a blender or food processor, and process until the oats are finely ground. This takes about 30 secondsin a blender, but could take up to 2 minutes in a food processor. Stop and scrape down the sides, if needed, to make sure everything is processed evenly into a fine flour.
  2. If you use a food processor, I recommend pouring the flour into a fine mesh strainer and sifting the flour into a large bowl, to make sure you strain out any large pieces that might not have been ground well. This way you'll have consistent measurement with your flour in the future. (This is optional, though. Small pieces of oats in your recipes should also be fine!)
  3. Store the oat flour in a dry, airtight container for up to 3 months. You can extend the shelf life slightly longer by storing this in the fridge, but if you don't make too much at one time, you should have no problem using your flour that fast!

Notes

  • 2 cups of rolled oats should make roughly 1 3/4 cups of oat flour. The nutrition information is for roughly 1/4 cup of flour, but this is just an estimate, and not a guarantee. 
  • If you use steel cut oats, you may get closer to 1 1/2 cups of flour for every 1 cup of oats, since they are denser than rolled oats. But, in that case I recommend using a high-speed blender for grinding the oats, since they are tougher than rolled oats on a food processor.

Nutrition Information

Calories 88kcal (4%) Carbohydrates 16g (5%) Protein 3g (6%) Fat 2g (3%) Saturated Fat 1g (5%) Sodium 1mg (0%) Potassium 84mg (2%) Fiber 2g (8%) Sugar 1g (2%) Calcium 12mg (1%) Iron 1mg (6%)

Nutrition Facts

Serving: 7(1/4 cup servings)

Amount Per Serving

Calories 88

% Daily Value*

Calories 88kcal 4%
Carbohydrates 16g 5%
Protein 3g 6%
Fat 2g 3%
Saturated Fat 1g 5%
Sodium 1mg 0%
Potassium 84mg 2%
Fiber 2g 8%
Sugar 1g 2%
Calcium 12mg 1%
Iron 1mg 6%

* Percent Daily Values are based on a 2,000 calorie diet.