Place the softened butter, Gorgonzola cheese, thyme, rosemary, parsley, chilli flakes, garlic and pine nuts into the bowl of a food processor. Puree until incorporated, taste, then season to taste with salt and pepper.
Season the steaks on all sides with salt and pepper. Cook to desired doneness on preheated bbq, about 5 minutes per side for medium rare. To serve, top each with about 2 tablespoons of the butter.