Stuffed Mushrooms

Bahan-bahan (20 porsi)

• 20 oz medium cremini or white mushrooms (20 to 22) ( )
• 3 tablespoons extra-virgin olive oil, divided
• Salt and freshly ground black pepper
• 8 oz Italian sausage (mild or hot, casings removed)
• 1 medium shallot, finely chopped
• 2 cloves garlic, finely chopped
• 4 oz cream cheese, softened
• ½ cup panko breadcrumbs
• ½ cup grated Pecorino Romano (or Parmigiano Reggiano) cheese
• 2 tablespoons fresh flat-leaf parsley, finely chopped, plus more for serving