Baked Ziti

I found this yummy recipe on a new cooking blog I found.......My Crazy Kitchen. My family loved it and it was super easy!!!

1 lb italian sausage or lean ground beef
1 lb dry ziti pasta
1/2 an onion, chopped
2 (26 oz) jars spaghetti sauce
6 oz sliced provolone cheese
1 1/2 C low fat ricotta or small curd cottage cheese
6 oz shredded mozzarella
2 Tbsp grated parmesan
Cook the pasta in salt water until done, Drain and set aside.
Brown the meat and onion in a large saucepan. Drain the grease and add spaghetti sauce. Simmer for 15 min.
In a greased 9x13 pan layer 1/2 of the ziti, provolone cheese, ricotta, 1/2 of the sauce mixture, then the remaining ziti, mozzerella cheese and remaining sauce mixture. Top with grated parmesan. Bake at 350 degrees for 30 minutes until cheeses are melted