How to Make It
Light a grill. Brush the steaks with olive oil and season with salt and pepper. Grill over moderately high heat, turning occasionally, about 15 minutes for medium-rare. Transfer the steaks to a platter and let stand for 5 minutes.
Meanwhile, in a small saucepan, melt the butter in the wine. Add the Fontina and cook over low heat, stirring, until the sauce is piping hot. Transfer the steaks to warmed plates, top with the Fontina sauce and serve.