Has anybody substituted an unsweetened chocolate baking bar for the chocolate chunks in the frosting? (elanaspantry.com)
Bake the bars for approximately 20 to 25 minutes, or until a cake tester or toothpick inserted into the middle of the cake comes out clean. (kingarthurflour.com)
According to the bar's website, it's the only six - layered baked bar in the world. (bembu.com)