Million Dollar Spaghetti

Bahan-bahan (12 porsi)

• 16 ounces spaghetti
• 1 ½ pounds Italian sausage (casing removed, or ground beef or turkey)
• 1 large yellow onion (chopped)
• 6 cloves garlic (minced)
• 48 ounces marinara sauce (or spaghetti sauce, 2 jars, divided)
• 3 teaspoons Italian seasoning (divided)
• 8 ounces cottage cheese ( or ricotta cheese)
• 8 ounces cream cheese (room temperature)
• ¼ cup sour cream
• 3 cups shredded mozzarella cheese (divided)
• chopped fresh parsley ( and parmesan cheese for garnish, optional)