Oat Flour vs Whole Wheat Flour: A Comprehensive Comparison

Home » Oatmeal Guide

As a dietitian and recipe developer, I love using alternative flours in my recipes and often choose between oat flour vs whole wheat flour to add additional nutrients and flavor to the final recipe.

In this article, I will go into a detailed comparison of oat flour vs whole wheat flour to share the differences and how I use them in my recipes.

Difference between whole wheat and oat flours:

Characteristic	Whole Wheat Flour	Oat Flour
Substitution with All-Purpose Flour	Blend 50% for lighter results	1:1 by weight or 1 ⅓ cups for every 1 cup of all-purpose
Gluten-Free	No	Yes
Allergen Information	Contains wheat	Allergen-free
Texture	Denser and heartier	Soft and light
Leavening Requirements	Can be used on its own	May require combining with other flours or using a leavening agent
Glycemic Index	59 - 84	44
Flavor	Robust and nutty	Slightly sweet
Ideal Uses	Hearty baked goods and rustic creations	Muffins, pancakes, and coarse bread

Nutritional Differences (Per ¼ Cup Serving)

Nutrient	Oat Flour	Whole Wheat Flour
Calories	120	140
Carbs	22g	27g
Fiber	3g	5g
Sugar	0g	0g
Fat	2g	0.5g
Protein	4g	6g
Glycemic Index	44	59 - 84

Nutritional information adapted from the USDA Food Central

What is healthier, wheat or oats?

Both wheat and oats have their health benefits and are rich in fiber and nutrients.

The choice between the two depends on your nutritional goals and any dietary restrictions.

Wheat Flour

Wheat flour is made from wheat kernels that are ground into a fine powder and contains essential macronutrients and micronutrients that the body needs, such as protein, fiber, calcium, iron, and potassium.

Whole wheat flour is higher in calories and carbohydrates than oat flour, but it also has more protein and fiber.

How To Make Oat Flour

Oat flour is made from grinding up oats and as a result has all the same nutrients as rolled oats do.

You can make oat flour simply in a blender or food processor by grinding up rolled oats into a fine flour.

My favorite oat flour recipes:

It contains 4 grams of protein, 3 grams of fiber, calcium, iron, potassium, and thiamine.

Oat flour has a lower glycemic index score than whole wheat flour, which means it causes a slower rise in blood sugar levels.

Baking Differences

Oat flour is softer and lighter than wheat flour, so recipes may need larger amounts of oat flour than wheat flour.

Oat flour is generally gluten-free, which means it won't make leavened products without a little help from leavening agents such as baking powder, baking soda, or yeast.

It can be combined with other flours, like whole wheat flour, to make baked goods, such as this vegan banana bread rise.

Healthy Vegan 5-Ingredient Banana Bread Recipe (Gluten-Free)

5 ingredients and a food processor is all you'll need to make this delicious and moist gluten-free and vegan banana bread that is perfect for all of your overripe bananas.

Check out this recipe

Texture

Oat flour has a texture that is more similar to whole wheat flour than to refined wheat flour.

It's light and absorbent, making it a great choice for banana bread, energy bars, and flourless pumpkin bread.

Flavor Differences

Oat flour is naturally a little bit sweeter than wheat flour, which means it adds more flavor to baked goods like muffins, pancakes, and bread.

Whole wheat flour has a denser texture and strong flavor, making it a great choice for heartier baked goods and rustic breads.

Gluten-Free

Oat Flour is gluten-free, making it an excellent choice for those with gluten sensitivities.

Unlike oat flour, whole wheat flour contains gluten. If you have gluten allergies, be sure to check labels for allergen information.

Storage and Alternatives

The shelf life of these flours is another practical consideration:

Oat Flour: It typically stays fresh for about 2 months when stored properly.
Whole Wheat Flour: You can expect a slightly longer shelf life of around 3 months, although it might vary due to its higher natural oil content compared to oat flour.

The Best Substitutions For Oat and Wheat Flours

Here are some of the best alternatives and substitutions in cooking applications and taste.

Alternatives to whole wheat flour:

spelt flour
all-purpose flour
rye flour
buckwheat flour

Alternatives to oat flour:

gluten-free all-purpose flour
rice flour
brown rice flour
almond flour
chickpea flour
quinoa flour

Frequently Asked Questions

Can oat flour be substituted for wheat flour?

Yes, oat flour can be used as a substitute for wheat flour in many recipes.

It's important to consider the type of recipe and the desired texture, as oat flour may yield slightly different results due to its gluten-free nature.

In some cases, you may need to adjust the liquid content or combine oat flour with all-purpose flour for the best outcome.

Is oat flour better than wheat flour for weight loss?

Oat flour is often considered a better option for weight loss compared to traditional wheat flour.

It is lower in calories, higher in fiber, and has a lower glycemic index. These factors can contribute to better weight management and improved satiety.

What happens if you use oat flour instead of all-purpose flour?

Substituting oat flour for all-purpose flour can yield different results.

Oat flour lacks gluten, which affects the texture and rising properties in baked goods.

You may need to adjust the liquid content and consider adding a rising agent like baking powder to achieve the desired texture and structure.

Can you eat raw oat flour?

Yes, eating raw oat flour and raw oats is generally safe.

Can you eat raw wheat flour?

It's not recommended to eat raw wheat flour as it can contain harmful bacteria. Always cook or bake with wheat flour before consuming.

Summary

The choice between oat flour and whole wheat flour depends on your specific dietary restrictions and baking requirements.

Oat flour has a mild flavor and is an excellent gluten-free flour replacement in muffins, banana bread, cookies, and other baked goods.

In contrast, whole wheat flour can add heartiness and structure to your baked goods, making it ideal for rustic bread and hearty pancakes.

For more oatmeal facts, check out my articles on oatmeal: