Baked Spaghetti

So I was getting tired of making spaghetti the same way. So one day i decided to bake it. And it has been a hit in the house since.

1 lbs. Jimmy Dean regular sausage
1 med onion, diced
1 (15 oz) can diced tomatoes
1 lbs thin spaghetti noodles
1 jar of your favorite spaghetti sauce
1 tbsp butter
4 cups mozzerella cheese, shredded

Grease a 13x9 glass pan.
In a large pot fill half way with water and bring to a boil.
In a medium size skillet, over medium- high heat, brown sausage and onions. Drain off any grease. Once water is boiling add the noodles, I like the break them in half then put in the water. In the skillet add the spaghetti sauce and the diced tomatoes, put on low. After the pasta is done, drain, put back into the pot. Add the butter and mix in the sauce. Put into the baking dish and cover with the cheese. Bake at 400 degree's for about 20 minutes, until the cheese is melted and turning golden brown. Serve with favorite garlic bread and salad.