What are oatein cookies oatein is the perfect combination of oats and protein in a great tasting cookie oatein cookies come in 4 amazing flavours including blueberry white chocolate and salted caramel are high in protein a source of fibre and packed with complex slow energy releasing carbs why use oatein cookies oateins oat and protein cookies contain 18g of protein per bar these protein rich cookies help the body grow and maintain muscle mass leading to a leaner and toned physique