Umm... it is richer than simple cocoa walnut muffins, quite different from brownies, not really a cake, and not a plain loaf either... well, you cannot decipher the Cocoa Walnut Squares because they are not only unique but too mesmerizing to analyze the experience! Made with readily available ingredients and a bit of ingenuity, the Cocoa Walnut Squares use the perfect proportions of cocoa, sugar and butter in the cake as well as the sauce, to deliver a tantalizingly chocolaty experience. The walnuts are a smart addition to this dessert, as too pure a chocolate flavour can get a bit saturating at times.