⭐ Cornstarch (Best Fat-Free Option)
1:1 (1 tablespoon cornstarch per 1 tablespoon arrowroot powder)Cornstarch works well as a substitute because it has comparable thickening properties and creates a light, crispy coating on roasted vegetables by absorbing moisture and promoting browning through starch gelatinization. This is important for achieving the desired texture in roasted vegetables.
To use cornstarch successfully, ensure vegetables are evenly coated and avoid using excessive amounts, as too much can create a powdery or gummy texture. It’s best to toss vegetables just before roasting to maintain the coating.
Compared to arrowroot, cornstarch may brown slightly faster but generally yields a similarly crisp and appealing texture, making it an excellent alternative in roasted vegetable dishes.