Ricotta Meatloaf

Name: Ricotta Meatloaf
Ingredients: 1/2 cup milk; 1 1/2 cups day-old bread cubes; 1 1/2 pounds ground beef; 2 large eggs, beaten with a pinch of salt; 1 cup fresh ricotta; 1/2 cup chopped scallions; 1/4 cup grated Parmesan cheese; 1/4 cup chopped fresh Italian parsley, plus extra for garnish; 1/2 teaspoon freshly grated nutmeg; 1/2 tablespoon kosher salt; Freshly ground black pepper to taste; 1 cup fresh mozzarella, cut into small cubes; 1/8 cup extra-virgin olive oil; 2 cups warm tomato sauce