Tapioca Starch (Best Option)
1:1 (1 tablespoon tapioca starch per 1 tablespoon arrowroot powder)Tapioca starch is a fine, neutral-tasting starch that mimics arrowroot’s ability to thicken and bind without adding heaviness. It gelatinizes at a similar temperature, helping to retain moisture in the dough and contributing to a soft, elastic crumb.
When using tapioca starch, ensure it is well incorporated into the dry ingredients to avoid clumping. It can sometimes create a slightly chewier texture if overused, so stick to the 1:1 ratio.
Compared to arrowroot, tapioca starch produces very similar results in cinnamon rolls, preserving the desired tenderness and moisture without impacting flavor.