Key findings
- 1Steel-cut, rolled, and quick oats are equally simple because the difference is only the cut size
- 2Flavored instant oatmeal can contain as much sugar as some candy bars per serving
- 3Oats are naturally gluten-free but often processed in facilities with wheat
Why is Oatmeal Level 3 on average?
Oat processing is straightforward: the groat is separated from the hull, then cut (steel-cut), steamed and rolled (rolled oats), or pre-cooked and dried (instant). None of these steps require chemical additives. The processing concern arises with flavored packets that add sugar (often 12g+ per serving), artificial maple or fruit flavors, and thickeners like guar gum. In our analysis, oatmeal products, plain and flavored together, average a Processing Score of 5.3, which is Level 3.
How 2,842 oatmeal products break down
Share of products at each processing level, in our analysis.
Oatmeal brand comparison
From least to most processed in our database.
How to read a oatmeal label
- 1
Plain oats should list only one ingredient: whole grain oats
- 2
Steel-cut and rolled oats are equally unprocessed; they are just different cuts
- 3
Instant oatmeal without flavorings is still just oats, pre-cooked and dried
- 4
Flavored packets with 12g+ sugar per serving are far more processed than plain oats
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Frequently asked questions
Are steel-cut oats less processed than rolled oats?
No. Both are single-ingredient oats. Steel-cut oats are simply chopped groats, while rolled oats are steamed and flattened. Neither process adds chemicals, and the difference is texture and cooking time.
Is instant oatmeal ultra-processed?
Plain instant oats are just pre-cooked and dried oats. Flavored instant oatmeal packets with added sugars, artificial flavors, and thickeners are far more processed. Search instant oatmeal to see its own average.