Beef Scallopine Casalinga from Mario's Restaurant - Bronx Little Italy | Arthur Avenue

Ingredients

• 8 slices fillet of beef, each about ½ inch thick
• ¾ cup vegetable oil
• 1/.2 cup finely chopped onion
• ½ cup very thin strips prosciutto
• ¼ pound fresh mushrooms, thinly sliced (should be about 2 cups)
• 2 tablespoons butter
• 1/3 cup brown beef gravy (canned)
• 1 cup marsala wine
• 2 tablespoons finely chopped parsley
• Flour for dredging
• Oil for shallow frizzing
• 8 rounds mozzarella cheese, about 1/3-inch thick and 3 inches in a diameter