"These are so, so yummy. After reading some comments, instead of adding white chocolate I used semi-sweet. I have a couple of serious chocoholics in this house. The recipe was perfect -- no surprises -- the crackles crackled and looked beautiful with the powdered sugar. Right now I'm making another batch since all of them were eaten last night. A real keeper. I'll make these again and again -- trying the white chocolate, maybe milk chocolate. Thank you!