Meatloaf with Ricotta - Lidia

Ingredients

• 1 cup milk
• 3 cups day-old bread cubes, from a loaf of country bread
• 3 pounds ground beef (freshly ground preferred)
• 3 large eggs, beaten with a pinch of salt
• 1 pound drained fresh ricotta (about 2 cups), plus more for the sauce if you like
• 1 bunch scallions, finely chopped (about 1 cup)
• 1/2 cup grated Grana Padano
• 1/4 cup chopped fresh Italian parsley
• 1/2 teaspoon freshly grated nutmeg
• 1 tablespoon kosher salt
• Freshly ground black pepper to taste
• 1/2 pound fresh mozzarella, cut in 1/2-inch cubes (about 2 cups)
• 1/4 cup extra-virgin olive oil
• 4 to 5 cups Tomato Sauce (see here)