What Makes A Brownie Cakey?
A brownie turns out cakey when the ratio of flour to fat and sugar is high. The presence of too much flour and baking powder, and not enough fat and sugar, creates a cakey texture. Over-beating the batter can also cause more incorporation of air that leads to cake-like texture. In contrast, a fudgy brownie has more fat and chocolate that make it chewy and dense. So, a cakey brownie has less fat and chocolate and more flour and raising agents.