Ricotta-Filled Meatballs

Ingredients

• 3 cups cubed crusty white italian bread, crusts removed
• 1 pound ground veal
• 1 pound ground beef
• 1 pound ground pork
• 1 large egg
• 1/2 onion, chopped
• 1/4 cup chopped fresh flat-leaf parsley
• 1/4 cup chopped fresh basil
• 1 1/2 cups grated parmigiano-reggiano cheese
• pinch of oregano
• coarse salt
• 2 cups basic tomato sauce
• 1 cup ricotta cheese
• 1/2 cup grated parmigiano-reggiano cheese
• 1 1/2 teaspoons coarse salt
• freshly ground black pepper
• 1 cup basic tomato sauce
• 1/2 cup ricotta cheese
• 1/4 cup grated parmigiano-reggiano cheese