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Rolled Oats

Old-fashioned rolled oats: 90 g per cup — the ingredient that most often tricks volume-measuring bakers.

1 cup

90 g

½ cup

45 g

Quick oats

80 g/cup (finer flake)

Steel-cut

160 g/cup (!)

Oat flour

100 g/cup, blend your own

Swap note

steel-cut ≠ rolled in recipes

About Rolled Oats

Oats are the conversion that saves recipes: a cup of rolled oats holds just 90 g — cookies built on "2 cups oats" fail by 30% when steel-cut (160 g/cup) sneaks in. Quick oats run slightly lighter (80 g). Blending rolled oats into flour yields 100 g per cup and substitutes well in quick breads by weight.