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 (minced beef); 2 tablespoons unsalted butter; 1 cup white onion (chopped); 1/2 cup green onions (scallions or green shallots) (chopped); 1 medium carrot (finely chopped); 1 rib celery (finely chopped); 1 tablespoon garlic (minced); 2/3 cup ketchup (tomato sauce Australia and UK) (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 parsley (minced); 2 large eggs (slightly beaten)