Thin Spaghetti Pie

Ingredients

• 3⁄4 pound thin spaghetti
• 5 cups pasta sauce, divided
• salt
• freshly ground black pepper
• 1 pound ground beef or Italian sausage meat removed from casings
• 1⁄2 onion, finely chopped
• 1 cup ricotta cheese
• 1⁄2 cup sour cream
• 1⁄4 cup grated Parmesan cheese
• 2 teaspoons dried basil
• 1-1⁄2 cups shredded mozzarella cheese
• 1-1⁄2 cups shredded cheddar cheese