This Easy Baked Ziti is a great Italian casserole recipe for feeding a crowd filled with pasta, sausage, and cheese.
Bring a large pot of lightly salted water to a boil. Add ziti pasta, and cook until al dente, about 8 minutes; drain.
In a large skillet, brown onion and sausage (or beef ) over medium heat. Drain the fat. Add minced garlic and cook for a minute or so. Add the marinara sauce and Italian seasonings, and simmer 15 minutes.
Preheat the oven to 350 degrees. Butter a 9x13 inch baking dish. Layer as follows: 1/2 of the ziti, 1/2 sauce mixture, all of the Provolone cheese, all of the sour cream, remaining ziti, remaining sauce mixture and then mozzarella cheese. Top with grated Parmesan cheese.
Spray aluminum foil with cooking spray so it doesn't stick to the cheese. Bake for 20 minutes in the preheated oven. Remove the foil and bake for an additional 10-15 minutes or until the cheese is melted and starts to brown.
Source: adapted from Allrecipes