This is my favourite Focaccia from Ursula Ferrigno's Truly Italian. That book is a real gem and a must have for any lover of the Italian Cuisine in my opinion.
I first saw this cinnamon pull apart bread on Joy the Baker's blog. http://www.joythebaker.com/blog/2011/03/cinnamon-sugar-pull-apart-bread/
I admit that I didn't follow her recipe, but used my usual sweet dough recipe and copied her way of layering the dough.. although to be fair, hers is a little bit prettier.. what can I say, I am a rustic baker! As usual I didn't pay attention to the order I uploaded the pictures, but I think you can see what is the finished product.