Mario Batali's Italian Meatloaf Recipe

Ingredients

• 2 pounds Italian-style pork sausage (sweet or hot)
• 2 pounds lean ground beef
• 4 + 1/4 cups fresh breadcrumbs
• 2 cups Pecorino Romana
• 3 large eggs
• 1 cup whole milk
• 1 pound baby spinach
• 4 carrots
• 12 scallions
• 1/4 cup all-purpose flour
• 10 thin slices mortadella (about 5 ounces)
• 6 slices Cascio di Roma or other semi-soft sheep's milk cheese
• 2 springs fresh rosmary
• 1/2 + 1/4 cup extra virgin olive oil