At 180 calories per serving, rolled oats contain just 10 more calories than a serving of steel cut oats, which contain 170 calories. They’re also very similar in fat. Steel cut oats contain 3.5 grams ...

Manufacturers can prepare raw oat groats in various ways to make them ready for consumption. Steel-cut oats are the least processed form, whereas rolled oats, or oat flakes, undergo more processing ...