Casein, brown rice, or paleo protein powders yield the best results; whey protein is not advised due to its sticky consistency, which impedes proper binding.
If the mixture appears too dry or crumbly, incorporate small amounts of water or milk until the batter holds together well.
Storage: Keep in an airtight container at room temperature, or refrigerate for longer freshness. Allow chilled bars to come to room temperature briefly before enjoying.
Freezing: Store in a sealed container in the freezer for up to six months.