Pizza Hotdish 17 Jul 12

2 lbs Italian sausage
2 cans spaghetti sauce
1 small can tomato paste
1 can mushrooms
1 box shell macaroni, cooked
onion
Parmesan cheese

Brown onion and sausage. Add rest of the ingredients and top with Parmesan cheese. Bake at 350 degrees for 1 hour.