Special K Protein
160 calories, 4g fiber, 13g protein, 9g sugar
Don't write off Special K as a chick's cereal. This 100 percent whole-grain wheat flake boasts 13 grams of protein per cup – the only other cereal in this ranking to equal that amount is Kashi GoLean Original. Special K's high-protein count and sweet textured taste make up for the fact this flake has slightly less fiber than we'd like.