⭐ Arrowroot Powder (Best Fat-Free Option)
Use 1 tablespoon of arrowroot powder per 1 tablespoon of cornstarchArrowroot powder is a starch extracted from tropical plants and functions similarly to cornstarch by gelatinizing when heated with liquid. It thickens quickly and produces a clear, shiny custard, which is ideal for bread pudding where appearance and texture are key.
When using arrowroot, avoid prolonged high heat as it can break down and lose thickening power. Add it towards the end of cooking or mix it with cold liquid before incorporating to prevent clumping.
Compared to cornstarch, arrowroot yields a slightly more delicate and glossy custard. It does not alter the flavor and keeps the bread pudding’s texture light and creamy, making it the best direct substitute.