Sprinkle the steaks with salt and press about a teaspoon of pepper into each side of the steaks. Put the butter and oil in a 10- or 12-inch skillet and turn the heat to medium-high. When the butter melts, turn the heat to high and add the steaks. Cook until almost done, 3 to 4 minutes per side for rare. Turn off the heat and transfer the steaks to a warm platter in a low