Trek's Biscoff protein bars feature Soya Protein Isolate, a chocolate-flavored coating, and actual Lotus Biscoff spread (made from wheat flour, sugar, oils, etc.), plus other natural ingredients like dates, cashews, peanut butter, chicory fibre, and cinnamon for sustained energy and the authentic caramelized biscuit flavor. Key components include plant-based protein, real Biscoff paste for taste, and a dairy-free chocolate coating, making it a vegan option with minimal artificial additives.