Here's one of the things I like best about these oven steamed mussels. If you have ever made mussels (the way I have, about one million times because mussels are addictive!), the most challenging part is fitting them all in the pan. Most recipes call for putting the mussels in a big old skillet, covering it and steaming them up. Which makes for delectable mussels...IF you can fit them all in the pan. Because let's face it, you need a lot of mussels to make up a dinner, and while I have more than one big old skillet, it was always pretty crowded in there. This recipe lets all the mussels hang out in your biggest roasting pan, along with leeks, white wine and a few other delectable things. Yes, that is bacon you see in that picture. Get that pan you use to make the Thanksgiving turkey and let's make it!