Rolled, Steel-Cut, Instant Oats, and Oat Flour—What's the Difference? (2024)

By

Diana Rattray

Rolled, Steel-Cut, Instant Oats, and Oat Flour—What's the Difference? (1)

Southern-cuisine expert and cookbook author Diana Rattray has created more than 5,000 recipes and articles in her 20 years as a food writer.

Learn about The Spruce Eats'Editorial Process

Updated on 08/3/24

Rolled, Steel-Cut, Instant Oats, and Oat Flour—What's the Difference? (2)

In This Article

  • Common Oat Grain Cuts

  • Oats for Baking and Substitutes

  • Oat Storage

  • Oat Recipes

Oats are cereal grains grown in temperate areas. They grow well in cool climates and tolerate more rain than other cereal grains. Oats are eaten like cereal and used in baked goods. They're also commonly used as livestock feed and occasionally used in soups.

Common Oat Grain Cuts

  • Whole oat groats are the whole grain of the oats, minus the hulls. They take the longest to cook.
  • Steel-cut oats are groats cut into 2 or 3 pieces with a sharp blade. They cook more quickly than whole oat groats and retain a nice, chewy texture.
  • Scottish oatmeal is a stone-ground oatmeal. The groats are ground and broken into small bits.
  • Rolled oats (old-fashioned), are the oat groats steamed and rolled into flakes. This means the oils are stabilized, and the oats stay fresh longer. The larger surface area means they will cook more quickly than steel-cut oats.
  • Quick oats are cut into more pieces, rolled thinner, and steamed longer. They will not have as much texture as the rolled oats or steel-cut but will cook more quickly.
  • Instant oats are usually very similar to (if not the same as) quick oats but might be pressed even thinner and cut even smaller. They might become rather mushy when cooked but generally, need very little cooking time.
  • Oat bran is the outer layer of the oat grain, just under the hull. Oat bran is part of rolled oats and steel-cut. Oat bran can also be purchased separately.
  • Oat flour(or ground oats) is sometimes combined with other gluten-free flour for gluten-free baked goods.

Oats for Baking and Substitutes

For baking, regular rolled oats and quick cooking are usuallyinterchangeablein a recipe. If your recipe calls for quick-cookingoats and you only have old-fashioned rolled oats, pulse the old-fashioned oats in the food processor a few times. If quick-cooking oats are used in a recipe in place of old-fashioned rolled oats, the texture will be different, but that will probably matter very little in most recipes.

You can also make oat flour, or ground oats, from oats. All you need is a blender or food processor to make ground oat flour. The gluten-free ground oats can be used to replace flour in many recipes.

Oat Storage

Oats have ahigher fat content than other cereal grains and can go rancid if on the shelf for too long. Buy oats in small amounts and store them in a tightly covered container in a cool, dry place.

Oat Recipes

Use oats as a hot cereal, in cookies and other baked goods to make gluten-free, or as a filler in meatloaf or meatballs.

Article Sources

The Spruce Eats uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.

  1. Rasane P, Jha A, Sabikhi L, Kumar A, Unnikrishnan VS. Nutritional advantages of oats and opportunities for its processing as value added foods - a review. J Food Sci Technol. 2015 Feb;52(2):662-75. doi:10.1007/s13197-013-1072-1

Rolled, Steel-Cut, Instant Oats, and Oat Flour—What's the Difference? (2024)

FAQs

Rolled, Steel-Cut, Instant Oats, and Oat Flour—What's the Difference? ›

Quick oats are cut into more pieces, rolled thinner, and steamed longer. They will not have as much texture as the rolled oats or steel-cut but will cook more quickly. Instant oats are usually very similar to (if not the same as) quick oats but might be pressed even thinner and cut even smaller.

What's the difference between steel cut rolled and instant oats? ›

The difference between steel-cut, rolled, and instant oats is simply how much the oat groat has been processed. This also results in each variety having a distinct texture and varying cook times.

Are rolled oats the same as oat flour? ›

How is Oat Flour Different from Oatmeal? Oatmeal and oat flour are identical in nutritional makeup and flavor because they're made from the same initial ingredient: whole oat groats. The main difference between meal and flour, though, is how finely the original ingredient has been ground.

Which is better for you steel-cut oats or quick oats? ›

Steel-cut oats have a GI score of about 53, and rolled oats — of about 57. Steel-cut oats may take longer to digest, reducing spikes in blood sugar. Both oat types are better choices than other forms, such as instant oats, which have a GI of about 83.

Can you substitute quick steel-cut oats for rolled oats? ›

Alternatively, if you want to use quick-cook steel cut oats but the recipe calls for rolled oats, reduce the liquid to 3/4 cup milk of choice and the oats to 1/4 cup. Recipes using steel cut oats generally make more than a single serving. Generally, the recipe will call for 1 cup steel cut oats and 4 cups liquid.

Can I use instant oats instead of rolled oats? ›

A: Absolutely! As I said, the benefits really don't differ between the three types of oats.

Is there such a thing as instant steel-cut oats? ›

Quick Cooking Steel Cut Oats are created much like our regular steel cut oats: they're just cut into smaller pieces, so they're ready to eat in 5–7 minutes instead of 15–20.

How do I substitute oat flour for rolled oats? ›

All you need is whole rolled oats (not steel-cut or quick oats) and a food processor or high-speed blender. Place the oats in the blender or food processor and blend until they form a fine flour, stopping to stir occasionally. That's it! Use it in any recipe that calls for oat flour.

Can I use steel-cut oats to make oat flour? ›

Homemade Oat Flour

It's so easy. You'll need old-fashioned (rolled) oats, quick-cooking oats or steel-cut oats, plus a blender or food processor. One cup old-fashioned or quick-cooking oats yields about one cup flour, whereas one cup steel-cut oats yields about two cups flour.

Why use oat flour instead of all purpose? ›

It's the Healthier Option Regular all-purpose flour is refined. It makes it a less-healthy option than oat flour, which happens to be a great source of dietary fiber, antioxidants, minerals, and B vitamins.

Is it okay to eat instant oatmeal every day? ›

Instant oats are a good source of carbohydrates, vitamins, minerals, and fiber. They also deliver a good amount of protein and fat. Regular consumption of oatmeal has been linked to a variety of health benefits.

Is it okay to eat steel-cut oats every day? ›

The fiber in steel-cut oats--especially a type of fiber called soluble fiber -- can help to lower your cholesterol. One study showed that eating 3 grams of soluble fiber from oats (about one-fourth-cup serving) every day lowers total cholesterol.

Why do people prefer steel-cut oats? ›

Steel cut oats are particularly great because they are only very minimally processed. To get steel cut oats, the oat kernel (called a groat) is cut into two or three pieces with a sharp blade. They are not steamed and rolled, like old fashioned (regular) oats.

Which is better, rolled oats or instant oats? ›

As far as plain oats go there isn't one kind that's healthier than the other. "It's a common misconception that one type of oat is healthier than another," says Rizzo. "They are all actually identical in terms of their nutrition.

What is the difference between rolled oats and steel-cut oatmeal? ›

Production: The primary difference between steel-cut and rolled oats is how they are processed. Steel-cut oats are made as the name suggests, by cutting the oats into smaller pieces using a steel blade. Rolled oats are steamed and then rolled flat. This means that they absorb liquid more quickly than steel-cut oats.

What happens if you use quick oats instead of rolled oats in cookies? ›

Texture – You'll get a chewier texture with rolled oats, and less chewiness with quick oats. Shape – These two types of oats don't incorporate into a dough quite the same way.

What is the healthiest oatmeal to eat? ›

Steel-cut oats, also called Irish oatmeal, are the whole oat kernel that has been cut into two or three pieces using steel disks. This type of oats contains the highest amount of fiber, as it is least processed. Steel-cut oats take a little longer to cook, and result in a creamy and chewy porridge.

Which type of oats is best for weight loss? ›

If you want to lose weight, Steel oats are better as they are least processed and have comparatively higher fibre content. They are also best suited for diabetic patients as the glycemic index is lower and does not spike up sugar levels. Steel-cut oats take longer to digest and thus keep you fuller for longer.

Are rolled or steel-cut oats better for overnight oats? ›

Steel-cuts oats can be used but expect them to very chewy and fairly dense. Follow this tip: Old-fashioned rolled oats are the best when it comes to the variety to use for overnight oats. They'll give you that creamy, smooth texture with just the right amount of chew.

What is the healthiest instant oatmeal? ›

15 Healthiest Instant Oatmeals on Grocery Shelves
  • Kodiak Cakes.
  • Nature's Path.
  • Better Oats.
  • Mylk Labs.
  • Better Oats.
  • Nature's Path.
  • Seven Sundays.
  • Kodiak.
Feb 16, 2024

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