Monkfish Braciola (Involtino di Pesce)

Ingredients

• Kosher salt and freshly ground black pepper
• 1 large piece of monkfish fillet (give or take 1 pound)
• 1 tablespoon unsalted butter
• 10 ounces broccoli rabe
• 2 teaspoons of extra virgin olive oil
• 2 garlic cloves finely chopped
• 4 ounces of stock mushrooms, chopped finely
• 3 tablespoons dry white wine
• Kosher salt and freshly ground black pepper to taste
• 1 tablespoon chopped parsley