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What are the difference between old fashioned and quick oats?

Are they nutritionally different?

Can they be substituted for one another in recipes?

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2 Answers 2

up vote 13 down vote accepted

Old fashioned oats are rolled whole-grain oat kernels. In quick oats, on the other hand, the oat kernel is first cut into smaller pieces before being rolled. This makes it much easier for quick oats to absorb water than an old fashioned oat. You can visibly see the size difference.

For baking quick oats can be used in place of old fashioned oats. However, if a recipe calls for quick oats, you may not get expected results using old fashioned oats. Typically, a recipe that calls explicitly for quick oats generally has too short a cooking time for regular oats to fully cook (e.g. pancakes).

Another thing altogether is instant oats. Do not substitute these in any recipe. Instant oats are parboiled, dried, and often has sugar and salt added.

Nutritionally, quick and old-fashioned oats are identical.

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Yes they are nutritionally different. Quick oats have a higher glycemic index and glycemic load than old fashioned oats. In other words, they have the same set of nutrients, but are digested more quickly than old fashioned oats.

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