Learn how to make oat flour with this simple tutorial. Save money by making your own oat flour instead of buying it at the store, and add flavor and texture to your favorite recipes with these helpful tips for substituting oat flour in baked goods.
I’m always looking for small, practical ways to boost the nutrition of our meals at home.
Hands down though, my all-time favorite nutritional swap is using oat flour in place of all-purpose flour when baking.
WHAT IS OAT FLOUR?
Oat flour is, quite simply, old fashioned rolled oats that have been ground up into a fine powder. Nutrition in oat flour isn’t a big secret. What manufacturers advertise on the label is pretty much what you get:
- Soluble Fiber. Shortens the time in the intestinal tract to promote regularity, slows digestion to make you feel fuller longer, binds acids in the intestines to alleviate constipation, and regulates blood sugar.
- Protein. The same high quality as meat, milk, and eggs.
- Vitamins and Minerals. Vitamin B, Vitamin E, zinc, selenium, copper, iron, manganese, magnesium, phosphorus…These all help the immune system in addition to other bodily functions.
What’s surprising about the nutrition in oats is that you get ALL of this in just one ingredient.
Oats are pretty much a “superfood” thanks to the amazing combination of nutrients available. All the more reason to add them to cookies, don’t you think?
GLUTEN-FREE OAT FLOUR
Not only does oat flour boost nutrition, but it is naturally gluten-free. It also gives baked goods a moist, slightly chewy texture. Oat flour adds moisture to items like cookies and breads that tend to dry out in just a day or two.
Making gluten-free oat flour doesn’t require any recipe rocket science to pull off successfully. It is super easy! It also keeps my budget down since I tend to keep rolled oats on hand. Those who need gluten-free ingredients can use certified gluten free oats.
Using food I have on hand to make substitutions is one easy way I keep my food expenses down, and it’s one of the first things I teach students in my eCourse Grocery Budget Bootcamp!
OAT FLOUR RECIPE INGREDIENTS
Yes, that’s really all you need!
Here’s a list of the most common types of oats:
- Steel Cut Oats – After harvesting, oats are separated from the husk in a large spinning machine. In the process, many oat groats are broken into small pieces. These small pieces of oat groats are steel-cut oats.
- Old-Fashioned Oats – The steel-cut oats are sifted so that only larger oat groats remain. These are rolled in between large pins and flattened. The result is considered old-fashioned oats.
- Rolled Oats – Old-fashioned oats are steamed and lightly toasted to aid in the cooking process at home. These are called rolled oats.
- Quick Oats – These oats are cut into smaller pieces before being rolled, steamed, and toasted. This is again to aid in the cooking process at home.
- Instant Oatmeal – This is the Quaker maple and brown sugar I grew up with. The oats are pre-cooked at the factory and then dried, usually with flavoring and sweetener added before packaging. (You can make your own instant oatmeal packets at home too!)
To increase nutrition and eat as much real food as possible, aim for old-fashioned oats at a minimum. Steel-cut oats have a higher level of nutrition because some of the bran (the outer protective shell) will still be intact. Oat flour from steel-cut oats is considered a whole grain flour.
Regardless of the type of oats you buy, homemade oat flour will always be more affordable than store-bought!
HOW TO MAKE OAT FLOUR STEP-BY-STEP
Step 2. Blend or process on high until oats are finely ground.
Note: It’s helpful to know that two cups of oats yield approximately 1 ¾ cups of oat flour.
Store any extra oat flour in an airtight container for up to 1 month or freeze for up to 6 months. Because of the natural oils in the oats (and no extra preservatives), oat flour is not shelf-stable for long periods of time. Luckily, it’s super easy to whip up more when you need it!
OAT FLOUR TIPS
- One cycle on my Blendtec (about 50 seconds) gave me pretty decent flour. A second cycle gave me even finer powder. I prefer the finer flour for my baked goods.
- If your blender or food processor tends to heat up with use, allow the machine to cool in between cycles. This helps prevent the oats from sticking to each other and not grinding well enough.
- This flour is NOT as fine as typical all-purpose flour. It will be slightly grainier, and more like coarse cornmeal.
HOW TO MAKE A RECIPE WITH OAT FLOUR
Gluten-free oat flour is the secret weapon for gluten-free families. Even if you’re not a gluten-free family, it helps to know how to substitute oat flour in baking recipes.
- Recipes that require rising: Bread recipes, biscuits, and rolls require gluten in order to rise. Since oat flour doesn’t have gluten, it won’t help with rising or elasticity in any recipe. While you can’t substitute oat flour entirely in bread recipes, you CAN substitute ½ cup to 1 cup of oat flour in those recipes.
- Cookie and brownie recipes: substitute up to half the wheat flour with oat flour.
- Cake or pastry recipes: substitute only ¼ of the flour in your recipe with oat flour. Typically, you’re looking for a fluffy rise in cakes or pastries. Too much oat flour will either cause the batter to be too dense or fall flat after baking.
- For all other recipes, like quick bread and muffins: start with ¼ -½ cup and see what happens! If you add too much the first time, your people might be leery of trying it again. You can always add more next time.
- You can make muffins and quick breads with just oat flour. However, you’ll need to add additional leaveners (like extra baking powder or baking soda) because oats don’t have any gluten to rise on their own. An extra egg also helps hold everything together, and you may want to add additional wet ingredients since oats absorb moisture as they bake. You’ll end up with a slightly denser (but still delicious!) baked good.
OATMEAL FLOUR FAQS
Is oat flour the same as ground oats?
Yes! Making oatmeal flour is as easy as putting rolled oats in the blender and grinding them up.
Can I use oat flour instead of all-purpose flour?
What is special about oat flour recipes?
From the nutritional benefits of oats, to the added moisture, to the delicious taste, oat flour is a great addition to your baked goods!
How much oat flour does 1 cup of oats equal?
After grinding into oatmeal flour, 1 cup of oats equals about 1 cup minus 2 tablespoons of oat flour.
OAT FLOUR RECIPES TO TRY
Here are a few of our favorite recipes that we most often use oat flour in:
- Zucchini Bread with Carrots & Apples
- Very Little Bother Oat Bread
- Maple Oatmeal Bread
- Vanishing Oatmeal Chocolate Chip Cookies
- Healthy Peanut Butter Oatmeal Cookies
- Double Chocolate Blender Waffles
- Cinnamon Oatmeal Blender Waffles
- ¼ cup to any smoothie
- Banana Bread Muffins
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WATCH HOW TO MAKE HOMEMADE OAT FLOUR
How to Make Oat Flour
Learn how to make oat flour at home with this simple tutorial. Save money by making homemade oat flour instead of buying store-bought, and improve texture & flavor in your favorite recipe! Plus tips for using an oat flour substitute in baking.
- Prep Time: 5 minutes
- Cook Time: 0 minutes
- Total Time: 5 minutes
- Yield: approximately 1 ¾ cups of oat flour 1x
- Category: Kitchen Hacks + Tutorials
- Method: Blend
- Cuisine: American
- Two cups of oats*
- Two cups of oats yields approximately 1 ¾ cups of oat flour.
- To increase nutrition, aim for old fashioned oats at a minimum. Steel-cut oats have a higher level of nutrition because some of the bran (the outer protective shell) will still be intact. Oat flour from steel-cut oats is considered a whole grain flour.
- Serving Size: ¼ cup
- Calories: 110
Keywords: oat flour