I'm pretty sure it's a sedum, I have one that looks just like it. The rosettes are alot smaller than those of hens and chicks, right? And the 'babies' are connected to the main plant by just a 'threadlike' stem, same color (bluish green) as the rest of the plant? I'll see if mine has a tag when I get home tonite?!
i just went and looked at a bunch of pictures of Sedum spathulifolium cape blanco, and others, on line, and the rosettes on my plant are more like hens and chicks (edges of "petals" not rounded) than appears in the pictures of cape blanco ... hmmmm