INGREDIENTS
Makes six.
2 tbsp
canola oil, divided
3 tbsp
chopped garlic
2
sweet onions, such as Vidalia, chopped
2 cups
mushrooms, thinly sliced
1/2 tbsp
kosher salt
1/2 tbsp
freshly ground black pepper
2 lb
flank steak
Kosher salt
Freshly ground black pepper
1 4 ounce package
baby spinach
9
slices provolone cheese