Ingredients for the Meatballs:

• 1 and 1/4 cups plain panko bread crumbs
• 4 tablespoons butter
• 2/3 cup yellow onion, finely chopped
• 2 teaspoons salt
• 1/2 teaspoon pepper
• 1/2 teaspoon ground allspice
• 1/4 teaspoon nutmeg
• 3 cloves of garlic, minced
• 2/3 cup milk
• 2 eggs
• 1 pound ground beef (85/15)
• 1 pound ground pork
• 3 tablespoons oil

Ingredients for the Pasta:

• 2 cups shell pasta

Ingredients for the Sauce:

• 6 tablespoons butter
• 1/4 cup plus 3 tablespoons all-purpose flour
• 4 cups beef broth
• 1/2 cup water
• 1 tablespoon Worcestershire sauce
• 3 tablespoons fresh parsley, finely chopped
• 1/2 cup heavy cream
• 1 tablespoon salt
• 1/2 teaspoon black pepper