Preheat oven to 350 degrees F (175 degrees C). Bring a large pot of lightly salted water to a boil. Add pasta and cook for 8 to 10 minutes or until al dente; drain.
Place sausage in a large, deep skillet. Cook over medium high heat until evenly brown. Drain, crumble and set aside.
In a medium bowl, mix together ,ricotta, l egg, 2 T. parsley,1 teaspoon Italian seasoning, salt and pepper,Spread bottom of a 9x13 inch baking dish with sauce. Layer 1/2 of the ziti, 1/2, the sausage, 1/2 of the ricotta, and 1/2 the mozzarella. Spoon half of the sauce over top. Repeat layers. Sprinkle top with remaining 1/2 teaspoons basil and Italian seasoning.