Meanwhile press pepper evenly onto beef steaks. Heat large nonstick skillet over medium heat until hot. Place steaks in skillet; cook 12 to 15 minutes for medium rare (145°F) to medium (160°F) doneness, turning occasionally. Remove to platter; keep warm. Add mushroom sauce to skillet; increase heat to medium-high. Cook and stir, 1 to 2 minutes or until browned bits attached to skillet are dissolved. Spoon sauce over steaks; sprinkle with thyme, if desired.
(Courtesy of the National Beef Council)