Baked Ziti with Tomato, Mozzarella and Sausage

Olive oil
1 large onion, cut in small dice
2 cloves garlic, minced
3/4 lb. sweet Italian pork sausage, removed from its casing and crumbled (works just as good with turkey sausage too)
Kosher salt and freshly ground black pepper
1/4 cup dry red wine
35-oz. can whole plum tomatoes, chopped, with their juice
1/4 cup chopped fresh marjoram or oregano (from about 6 large sprigs)
1 cup fresh ricotta cheese1 cup freshly grated mild pecorino cheese
Pinch nutmeg, preferably freshly grated
1/3 cup chopped fresh flat-leaf parsley
1 lb. dried ziti
1/2 lb. mozzarella, preferably fresh, cut in small cubes

Heat the oven to 425°F. Lightly oil a large, shallow baking dish. Bring a large pot of salted water to a boil.
In a large skillet, heat about 2 Tbs. olive oil over medium heat. Add the onion and sauté until soft, about 5 minutes. Add the garlic and crumbled sausage and sauté until the sausage starts to brown. Season with salt and pepper. If the sausage gives off a lot of fat, pour off most of it, but leave a little to add flavor to the sauce. Add the red wine and let it boil until it's almost gone. Add the tomatoes with all of their juices and cook, uncovered, at a lively simmer for about 10 minutes. The sauce will thicken slightly. Add the marjoram or oregano and taste for seasoning.
In a large bowl, mix the ricotta, about half of the grated pecorino, the nutmeg, and the parsley. Season with salt and pepper.
Meanwhile, cook the ziti until al dente. Drain well and toss it with the ricotta mixture until well coated. Add the sausage and sauce and mix again. Add the mozzarella and toss gently. Pour everything into the baking dish and sprinkle the remaining pecorino on top. Bake uncovered until lightly browned and bubbling, about 20 minutes. Serve right away