Built Bar Brownie Batter Puff – Chocolate Protein Bars with Marshmallow Center (12x40g)Our most popular chocolatey Built Puff. Gluten free brownie marshmallow. This Puff has a delicious brownie batter flavor, perfect fluffy texture, and it is covered in Builts signature chocolaty coat. This will have you completely forgetting that you are eating a protein bar. No need to pinch yourself, this is real life. Ingredients Premium Collagen Protein Blend (Partially Hydrolyzed Whey Protein Isolate, Collagen), Glycerin, Sugar, Water, Palm And