Three Cheese Chicken Penne

1 lb pkg Penne pasta
1-2 lbs Boneless/Skinless Chicken Breast
1 pkg (9 oz) Fresh Spinach (chopped)
1 tsp Dried Basil
1 jar Spaghetti Sauce (I used 1 can each of tomato sauce and diced tomatoes and threw in some oregano, etc.)
1/2 Onion- minced
4 cloves Garlic- minced
1 tbsp olive oil
4 oz Cream cheese- cubed
1 1/2 cups Shredded Mozzarella Cheese
1/2 cup Shredded Parmigiano- Reggiano Cheese

Pre-heat oven to 375*. Cook pasta. While that's boiling, work on the remaining ingredients.
Cook chicken in oil. Remove to a large bowl. Add garlic and onion to chicken drippings. Sautee until tender, add to chicken. Pour Spaghetti sauce in with chicken mixture. Add basil. Before you remove the pasta, add the chopped fresh spinach for about a minute. Then drain and add to bowl. Add cream cheese and 1 cup of mozzarella cheese. Mix well. Pour into baking dish and bake at 375* for about 15 minutes. Top with remaining mozzarella and parmigiano reggiano cheese. Bake for another 5- 10 minutes, until cheese starts to bubble. Garnish with chopped fresh basil.