Baked Ziti III

This is from allrecipes.com 

Tried and tested very good!

Ingredients

• 1 (16 ounce) package dry ziti pasta
• 1 pound lean ground beef
• 1 onion, chopped
• 2 (28 ounce) jars spaghetti sauce
• 6 ounces sliced provolone cheese
• 6 ounces sliced mozzarella cheese
• 1 1/2 cups sour cream (use light or fat free)
• 1/2 cup grated Parmesan cheese
• 1/4 cup chopped fresh basil
• try layer spinach in it also

Directions

1. 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. In a large skillet, brown beef over medium heat. Add onions; saute until tender. Drain off fat and add spaghetti sauce; simmer for about 15 minutes.
3. Preheat oven to 350 degrees F (175 degrees C).
4. In a lightly greased 2 quart baking dish, place about half of the pasta; top with a layer of provolone and mozzarella cheese slices. Spread on a layer of half the spaghetti sauce mixture and sour cream.
5. Cover with remaining pasta, cheese and sauce; sprinkle a layer of Parmesan cheese and fresh basil.
6. Bake in preheated oven for about 30 minutes or until cheese and sauce are bubbly; serve.