The dish was a big hit with my entire family. I plan on making twice as much next time

12 oz spaghetti
1 tablespoon olive oil
1 medium onion, finely chopped
3 cloves garlic minced
1 pound ground beef
24 oz jar of marinara sauce
1/2 teaspoon salt
1/2 teaspoon black pepper
1 cup cream cheese, softened
1/4 cup sour cream
1 cup shredded mozzarella cheese
1/2 cup grated Parmesan cheese
2 tablespoons fresh basil, chopped