Home Made Mac and Cheese

My sister-in-law made a very tasty macaroni and cheese at Christmas, and since then I watched an episode of Bones where they made a fuss about mac and cheese with panchetta and leeks, and I decided to make my own.
I boiled up about 2 1/2 dry cups of elbow macaroni and fried up a couple strips of bacon. Then I sautéed most of a leek in the rendered bacon fat and (because I'm the only leek-eater around here) set the leek aside. I cubed up about half a pound of feta and melted it, along with some shredded mozzarella and Colby jack, in the same pan that still had the leek-infused bacon fat. I added some skim milk, a little white pepper, and a heaping 1/8 teaspoon nutmeg. I stirred it up, tossed it with the noodles and chopped bacon in a lightly greased casserole dish, and put it in the over on 200 while I cooked up the polish sausage and made the salad. When I dished it all up, I mixed some of the leek in to mine. It was quite good if I say so my self.