The Best Classic Spicy Meatloaf

Name: The Best Classic Spicy Meatloaf
Prep time: 10 min
Cook time: 1 h 10 min
Total time: 1 h 20 min
Cuisine: American
Ingredients: 1 1/2 pounds ground beef; 2 tablespoons unsalted butter; 1 cup chopped onion; 1/2 cup chopped green onions; 1 carrot, finely chopped; 1 rib celery, finely chopped; 1 tablespoon garlic, minced; 2/3 cup ketchup, divided; 2 teaspoons Worcestershire sauce; 2 teaspoons salt; 1 1/2 teaspoons ground black pepper; 3/4 pound spicy ground pork sausage; 1 cup bread crumbs; 1/3 cup fresh parsley, minced; 2 large eggs, slightly beaten