The first recipe will be dedicated to the name of the blog, surely.
To be honest, for the moment of publishing the entry I have never tried it, but my boyfriends' mum cooks it a lot. Seems like people love it. Well, how could you not like creamy potatoes? Mouthwatering!
In the original Swedish potatisgratäng recipe, there are onions used. In BBC Food version of potatoes dauphinoise - garlic is presented. I guess, it is more up to your own preferation, whether you like it smoother or want something with extremely delicious garlicky smell.