INGREDIENTS
1
(2- to 3-pound) flank steak
3 oz
Prosciutto
2
Garlic cloves
1 cup
Spinach
1/2 cup
Balsamic vinegar
2 tbsp
Dijon mustard
1
Black pepper, Freshly ground
1 tsp
Kosher salt
1
Kosher salt and pepper
1
Neutral cooking oil
1 cup
Olive oil, extra-virgin
6
slices Provolone cheese