Baked Penne with Sausage

Ingredients :
16 oz barilla penne pasta.
1 lb pork sausage.
15 oz sargento part-skin ricotta cheese.
1 egg.
1 medium yellow onion.,chopped
4 oz. baby spinach.
26 oz. bove tomato sauce.
4 oz. shredded mozzarella cheese.
4 oz. grated parmesan cheese.
1 tsp basil,dried.
2 tsp minced garlic.
1 tsp oregano, dried.
1/2 tsp kosher salt.
1/2 tsp ground black pepper.
DIRECTION:
1.Preheat an oven to 350 degree F( 175 degree C).Grease a baking dish 9 x 13 inch.
2.Fill a large pot with lightly salted water and bring to a boil over medium heat. Once the
   water is boiling, stir in the pasta, and return to a boil.Cook the pasta uncoverd,stirring
   occasionally until the pasta has cooked through,but is still firm to the bite about 8 minutes.
  Drain will a colander. set in the sink.
3.While pasta is cooking, heat a large skillet over medium heat, add the sausage and cook
   and stir until brown about 10 minutes. Add spincah 3 minutes before the sausage is done.
  Drain sausage and spinach. set aside.
4.Stir together the ricotta cheese,egg,onion,garlic, parmesan cheese and oregano in a large bowl,
   until combined.Stir in the drain pasta, the drained sausage and spinach, salt,pepper and 1/2 jar
of the spaghetti sauce, mix well.
5.In the prepared baking dish,cover the bottom with 1/3 jar of spaghetti sauce, layer 1/2 of the
  pasta mixture, 1/3 jar of spaghetti sauce and 1/2 of  the shredded cheese. Than layer the
  remaining 1/2 of  pasta, 1/3 of the sauce and 1/2 of the cheese. Sprinkle  with basil. Cover
  the dish tightly with foil.
6.Bake in the prehated oven until heated through about 20 minutes, Uncover return to the oven
 and bake until cheese melted,5 to 10 minutes or more.