Baked Pasta with Italian Sausage

Often recipes look great but often I don't have everything needed.  I'm getting more confident in guessing good substitutions or additions and this recipe is one that turned out great in it's modified version!  Here it is below.

1 (12 oz) package dry (penne or bow tie work well) pasta
2 tsp olive oil
1 pound mild Italian sausage (not in casing)
1 clove chopped garlic
1 c chopped onion
1 tsp basil
1 (15 oz) can tomato sauce
1 (14.5 oz) pizza sauce
1 (6 oz) can tomato paste
2 cups shredded mozzarella cheese

Directions

1. Preheat oven to 350 degrees. 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.
2. Heat oil in a large, deep skillet. Place sausage, garlic, onion and basil in skillet and cook over medium high heat until evenly brown. Drain excess fat. Stir in tomato sauce, pizza sauce and tomato paste. Simmer for 10 minutes, stirring occasionally. Toss with cooked pasta, and place in a 9x13 inch baking dish. Sprinkle top with mozzarella.
3. Bake in preheated oven for 20 minutes, or until cheese is melted.